Have we underestimated the eco-anxiety middle-aged and older people feel? According to a recent survey, younger folks aren’t the only ones frowning at the horizon. Eoin Redahan writes.

When you think of a middle-aged person suffering from exo-anxiety, what do you imagine? Is it a grey-haired woman gazing from a mountain peak with a single, heroic tear staining her cheek? Is it an auld fella rending his garments and shaking his fist at the sun?

I mean, possibly, but the reality is probably less dramatic. It could be the Pakistani householder who wonders if her family home will be swept away in the next flood. It might be the 39-year-old Australian who wonders if his country will be habitable when his young child grows up.

It might be the Maldivian who wonders if his homeland will go the way of Atlantis within 20 years. It was me when someone decided it would be a good idea to have a barbecue in the fields beside my house in the middle of the heatwave – when the grass was as dry as straw and wildfires scorched in south London.

Athanasius Kircher's map of Atlantis, placing it in the middle of the Atlantic Ocean, from Mundus Subterraneus, 1669. Will people pore over maps of the Maldives in the same way?

The presumption by many is that it’s only the young who feel anxious about climate change, for it is they who will inherit the mess. However, according to recent ONS statistics, the middle-aged and the old are almost as worry-weary as young people.

Having analysed a recent ONS Opinions and Lifestyle Survey, straw specialist firm Drinking Straw filtered some of the stats. They reveal that 62% of UK people over the age of 16 worry that rising temperatures will directly affect them by 2030. Of these, 70% of 16-29 year olds were worried about the heat, but 59% of 50-69 year olds were also worried, as were 57% of those aged 70 and over.

In other areas, the differences were even less stark. When it came to anxiety over extreme weather events, 48% of all adults were worried – only slightly less than the 49% of 16 to 29 year olds who did so.

>> How can I make my garden more sustainable? Professor Geoff Dixon shows us how.

Similarly, regarding water supply shortages, 40% of all adults are concerned about them overall, compared to 43% of those aged 16 to 29. Admittedly, young people are more worried than older adults about rising sea levels (45% vs. 31%), but the differences are noticeably narrow in most metrics.

Surprisingly, it turns out the percentage of those who don’t care at all about the merciless heat, parched land, rising sea levels, and freak weather events is fairly consistent across all segments, with the 12% of 16-29 year olds not giving a fig similar to the 14% of indifferent adults.

ONS figures reveal that most people have made climate-friendly changes to their day-to-day lives, whether they grew up in the age of renewables or the age of coal.

Action stations?

Broadly speaking, UK adults are becoming more eco-conscious, if data from the ONS’ Climate change insights, families and households, UK: August 2022 survey are to be believed. The survey has found that 77% of adults have made some, or a lot of changes, to their lifestyles to tackle climate change.

When the remaining 23% were asked why they made no change to their lifestyles, the most common reason given was: the belief that large polluters should make changes before individuals, followed closely by those who felt that individual change wouldn’t make much of a difference.

It’s clear to most of us that the government must help drive change, including on our roads. Despite the UK’s lagging electric vehicle infrastructure, the study revealed that the number of licensed zero emission vehicles, ultra-low emission vehicles, and plug-in vehicles increased by 71% or more last year.

If people knew there were sufficient charging points dotted around their areas – and if they were further incentivised to give up their gas-guzzling vehicles – those numbers would surely increase.

As bleak as the situation is, it is heartening to see our attitudes changing. Now, if you’ll excuse me, I’ve just read a climate-related story that brought a tear to my eye. If anyone wants me, I’ll be weeping in a dark room (passive-cooled, mercifully).

Which species can you plant to increase the nutrients in your soil and boost biodiversity, and which pathogen tackles some of those pesky weeds? Our resident gardening expert, Professor Geoff Dixon, tells us more.

The term ‘sustainability’ for gardening means replacing what you take out of the soil and supporting localised biodiversity. Harvested crops, for example, take out nutrients and water from the soil. Replacements should be supplied that aid biodiversity and have minimal impact, or zero impact, on climate change.

Seaweed (Ascophyllum) has been recognised as a valuable fertiliser source in British coastal areas for centuries. Now, proprietary seaweed extracts are gaining popularity either when applied directly as liquid feeds or sprays, or when added into composts.

Classed as biostimulants, seaweed extracts contain several micro-nutrients and a range of valuable plant stimulatory growth regulators. They encourage pest and disease tolerance, increase frost tolerance, stimulate germination, increase robust growth, and add polish to fruit such as apples and pears.

Seaweed bolsters some of the nutrients lost through gardening. Image from Geoff Dixon.

Benefits of borage

Some plants are very effective supporters of biodiversity. Borage (Borago officinalis), known also as starflower or bugloss, is a robust annual plant of Mediterranean origin with pollinator-attractive blue flowers.

It is very drought resistant and suitable for dry gardens. Although an annual, it is self-seeding and could spread widely. It is very attractive to bees as it produces copious light – and delicately flavoured honey.

Its flowers and foliage are edible with a cucumber-like flavour, making it suitable in salads and as garnishes, while in Germany it is served as grűne soße (green sauce). When used as a companion plant for crops such as legumes or brassicas, it will also help to suppress weeds.

Borage is good for bee and belly. Image from Geoff Dixon.

Weeding out the problem

Weeds are a continuous problem for gardeners and their prevalence varies with the seasons. Groundsel (Senecio vulgaris), also known as ‘old man in the spring’, persists whatever the weather.

It is ephemeral but can seed and regrow several times per year. As a result, once established, it is difficult to control without very diligent hand weeding and hoeing out young seedlings before the flowers form.

There is, however, a form of biological control that can aid the gardener. Groundsel is susceptible to the fungal rust pathogen (Puccinia lagenophorae). This pathogen arrived in Great Britain from Australia in the early 1960s. Since then, it has become well established and outbreaks on groundsel start to become obvious in mid- to late-summer, especially in warm dry periods.

A fungal pathogen can kill groundsel, a weed that comes through several times a year. Image from Geoff Dixon.

Severe infections weaken, and eventually kill, groundsel plants. Gardeners should take advantage of the infection and remove the diseased weeds before any seeds are produced.

>> How else has climate change changed the way our gardens grow, and what can be done to alleviate its effects? Geoff Dixon investigates.

Professor Geoff Dixon is author of Garden practices and their science, published by Routledge 2019.

Written by Professor Geoff Dixon. You can find more of his work here.

A range of greenhouse gas removal technologies may be necessary if we’re to reach Net Zero by 2050. In the second of our two-part geoengineering feature, Eoin Redahan looks to the sea, the sun, and mineral weathering, and at the ethical concerns such technologies raise. Missed Part One? Find it here.

‘Water, water, everywhere, nor any drop to drink.’

These famous words from Samuel Taylor Coleridge’s Rime of the Ancient Mariner aren’t the only famous part of his epic poem. The term albatross around one’s neck comes from it too.

After shooting a friendly albatross at sea, the poem’s narrator was forced by the ship’s crew to wear the dead creature around his neck – and grievous luck was to follow. Well, our blue planet has an albatross around its neck in the form of climate change.

Perhaps the solution to it lies all around us – water, water, everywhere…

An ocean of potential

In theory, we can use our oceans to pull CO₂ from the air on an enormous scale. All it may take is clever intervention – potentially ruinous, albatross-shooting intervention.

Nevertheless, the World Economic Forum lays out the tantalising potential. ‘Ocean-based CO₂ removal can help us achieve “net negative emissions” as the seas hold 50 times more carbon than the atmosphere,’ it says.

‘The ocean [is] a sink for nearly one third of anthropogenic carbon emissions and more than 90% of the resulting heat… If we are going to manage atmospheric CO₂ levels to our advantage, we will need to leverage the ocean’s existing ability to govern the global carbon cycle.’

Frontier has targeted the development of scalable sources of alkalinity. The reasoning behind it is that with CO₂ being an acidic molecule, rising CO₂ concentrations could be neutralised through alkalinity. It has mentioned using mine tailings to remove up to 0.5 gigatonnes of CO₂ from the air each year; but the major caveat here is that it needs to be done safely.

Planetary Technologies has ventured into this space armed, essentially, with a bicarbonate of baking soda that could draw in CO₂ and sequester it for millenia.

The company explains its process: ‘We start by carefully extracting key parts of the mine tailings including recovering battery metals (like nickel and cobalt) and silica (sand) and then take the remaining purified metal salt solution into a special electrolyser. There, using clean, renewable electricity, the salt and water are split to make hydrogen (a clean, emissions-free fuel), and a pure alkaline hydroxide.

‘It’s from this point that we transport the bulk alkaline materials to our ocean outfalls site where the alkalinity is introduced to the surface ocean that then draws in CO₂, sequestering it as already abundant bicarbonate and carbonate ions in seawater.’

So, by decreasing the acidity of the ocean, it would have a greater capacity to absorb CO₂ from the air. The key, however, is to reduce this to a viable price point.

>> Want to read about iron fertilisation in our oceans? Rhiannon Garth Jones took a closer look here.

Mineral weathering, methane capture, and more

Mineral weathering is another contender in the CO₂ removal mix. One technology that recently received $2.4m in funding is Seattle-based Lithos’ enhanced weathering process – a mineral weathering process that could capture CO₂ at a gigatonne scale. According to Frontier, Lithos spreads basalt on croplands to increase dissolved organic carbon, before eventually being stored as ocean bicarbonate. The idea is to maximise CO₂ removal while bolstering crop growth.

Closer to home, SAC Consulting in Edinburgh will receive £2.9m to capture the methane produced by cattle and cut emissions from the livestock farming sector; Synthetic Biology in San Francisco has received an R&D grant to synthesise a polymer within algae that is capable of sequestering atmospheric CO₂ at a large scale; and Charm Industrial is converting plants into a carbon-rich liquid that is pumped underground.

To do the latter, Charm grows cellulosic biomass that captures CO₂ from the atmosphere. It is then harvested, ground, and heated, before being turned into a bio-oil that is pumped underground.

Even the concrete beneath our feet could be used as a carbon sink. CarbonCure is injecting CO₂ into its concrete mixes, which it says is not only comparable in cost to traditional concrete, but stronger.

And then, we have solar engineering – arguably the first technology that comes into many of our minds when we think of carbon removal. All sorts of geoengineering technologies exist in this sphere including cirrus cloud thinning, stratospheric aerosol scattering, and marine cloud brightening.

Ethical issues?

Interestingly, Harvard’s Solar Geoengineering Research Programme referred to geoengineering as ‘a set of emerging technologies that could manipulate the environment and partially offset some of the impacts of climate change’.

Therein lies the problem for many. What are the consequences of ‘manipulating the environment’, especially if these technologies fall into unscrupulous hands?

In her excellent blog for SCI on geoengineering, Rhiannon Garth-Jones referred to the Haida Corporation Salmon trial. In this trial, 120 tonnes of iron compound were deposited in the migration routes of pink and sockeye salmon in the Pacific Ocean, which resulted in a several-month-long phytoplankton bloom.

It was seen by many as a success. The phytoplankton fed fish and increased biodiversity and the iron sequestered carbon; but Environment Canada believed the corporation violated national environmental laws by depositing iron without a permit.

History teaches us that profit vs. planet tussles don’t always go the way we would like, and the consequences of these technologies going into the wrong hands could be catastrophic.

On 29 June, The World Economic Forum called for a code of conduct for ocean-based CO₂ removal; and the American Geophysical Union, a group of climate and planetary scientists, is leading the way in developing an ethical framework for climate intervention engagement.

We’re all feeling the effects of climate change. As I write this piece on 19 July, it is 39°C here in Greenford, London. 39°C in London! The earth is cracking, planes are circling (because the runways are melting), and grass fires are blazing in Croydon.

On days like today, it feels like we need all the innovation we can get.

Many believe that greenhouse gas removal technologies will be necessary if we’re to reach net zero by 2050. In the first of our two-part geoengineering feature, we look at some of the difference-makers.

This week, a friend of mine played a tennis match just north of London. The game was due to take place at 18:00 but was deferred for an hour because it was 39°C. This came a day after Rishi Sunak, who may become the UK’s next Prime Minister, warned about going ‘too hard and too fast’ on net zero measures.

It’s looking increasingly likely that the implementation of environmental policies isn’t happening quickly enough; so, if we want to avoid catastrophic climate change, we will need to develop technologies that pull carbon dioxide from the atmosphere.

Mercury rising: the UK recorded record high temperatures this week.

Certainly, that’s the UK government’s perspective. ‘Greenhouse Gas Removal technology will be essential to meeting the UK’s climate change target of net zero carbon emissions by 2050,’ it said. ‘These technologies will be necessary to offset emissions from hard to decarbonise areas, such as parts of the agriculture and aviation sectors.’

Thankfully, work is underway to make this happen. And it is more than just the pang of the environmental conscience that has stirred the private sector into action. There is much money to be made from geoengineering. Indeed, a CNBC story has estimated that it could be a trillion dollar market by 2050.

The public investment has been relatively modest by some. The UK government recently pledged £54m in funding towards 15 different carbon removal technologies. But some in the private sector have dollar signs in their eyes.

A collaborative called Frontier – funded by Stripe, Alphabet, Shopify, Meta, McKinsey, and tens of thousands of businesses using Stripe Climate – has made an advance market commitment to spend an initial $925m on permanent carbon removal technologies between 2022 and 2030.

‘Models project that by 2050 we will need to permanently remove billions of tons of CO₂ from the atmosphere every year,’ it states. ‘To date, fewer than 10,000 tons have been removed in total.’ The capital it has committed is designed to help companies developing carbon removal solutions to scale up.

The UK government has mentioned the need for a portfolio of carbon removal technologies to reach net zero. A cursory look reveals that there are many from which to choose, including direct air capture, the manipulation of the sea, advanced weathering, and solar engineering.

These methods are audacious, exciting, and controversial.

Direct air capture

The key, as ever, is to come up with low-carbon technologies that are both effective and economically viable. In that respect, direct air capture has emerged as a front runner. This technology often uses giant fans with filters, or chemical processes, to take CO₂ from the air.

The difficulty is the amount of energy needed to power these processes and the source of this energy. The cost of removing each tonne of CO₂ is also an impediment to growth – something that will need to fall for it to be implemented on a large scale.

Climeworks co-founders Jan Wurzbacher and Christoph Gebald at the Orca plant in Iceland. Image courtesy of Climeworks.

Nevertheless, significant strides have been made in recent times. Swiss company Climeworks raised US$650m in equity for its largest direct air capture plant, and last week it inked a 10-year deal with Microsoft to permanently remove 10,000 tonnes of CO₂ emissions from the atmosphere on its behalf.

The company’s machines capture CO₂ from ambient air by drawing air into the collector with a fan. The CO₂ is captured on the surface through a selected filter material that sits inside the collectors. Once the filter is filled with CO₂, the collector is closed, and the temperature is increased to 80–100°C, whereupon the CO₂ is released.

And what becomes of the CO₂ after that? The CO₂ at its Orca facility (50km outside Reykjavík, Iceland) will be mixed with water and pumped deep underground. The carbon dioxide will then react with the basalt rock through natural mineralisation and turn into stone.

Climeworks CO₂ turned into stone via Carbfix technology. Image courtesy of Climeworks.

And Climeworks isn’t the only one operating in this space. As part of the UK Government’s aforementioned £54m funding, London-based Mission Zero Technologies will receive £2.9 million to build a low-energy, heat-free way to pull CO₂ from the air.

Sydney-based AspiraDAC has been backed by the Stripe Climate Fund to remove 500 tonnes of CO₂ using its modular, solar-powered system. According to Frontier: ‘Its MOF (metal-organic framework) sorbent has low-temperature heat requirements and cheap material inputs, increasing the likelihood that AspiraDAC can help accelerate the production of lower-cost metal-organic frameworks which, historically, have been expensive and difficult to synthesise.’

The Stripe Climate Fund has also backed 8 Rivers Capital, LLC, and Origen Carbon Solutions, Inc to remove CO₂ from the air using its direct air capture (DAC) technology. Frontier said: ‘The DAC technology accelerates the natural process of carbon mineralisation by contacting highly reactive slaked lime with ambient air to capture CO₂. The resulting carbonate minerals are calcined to create a concentrated CO₂ stream for geologic storage.’

Of course, direct air capture is just one of many CO₂ removal solutions. In part two, next week, we’ll look at other promising technologies.

The wild weather fluctuations wrought by climate change are stressing out our plants. Our resident gardening expert, Professor Geoff Dixon, explains how.

Pests and diseases are familiar causes of plant damage and loss. Less familiar, but becoming more frequent, are stresses resulting from environmental causes.

These are termed abiotic stresses because no living organism is involved. This means there are no visible signs of pests or pathogens. Diagnosis and treatment are, therefore, less straightforward. These causes are a result of interactions between the plant genotype and the prevailing or changing environment.

Damage may only become apparent after harvesting and at the point of consumer use. A typical example of this is internal browning or breakdown of Brussels sprouts. Larger sprouts are more susceptible to stress, with dense leaf packing in the bud, particularly in early and midseason cultivars.

The internal browning of Brussels sprouts is a consequence of plant stress.

A suggested cause is water condensing within the bud, which restricts calcium transport and leads to marginal leaf necrosis (death). This resembles the exudation, or perspiration, of water from leaf edges when growing plants absorb excessive water, flooding the vascular systems following very heavy rainfall and hot weather.

Moisture damage

Oedema is another moisture-induced disorder. Symptoms include unattractive wart-like swellings coalescing on leaves and stems, particularly on Brussels sprouts, cabbages, and cauliflowers. These may rupture, becoming corky with a yellowish or brownish appearance.

Moisture-induced damage to cabbage leaves.

These symptoms result from high soil moisture content and high relative humidity associated with hot days and cool nights. Both internal browning and oedema can be minimised by improving soil structure, encouraging rapid drainage by deep cultivation or growing plants on raised beds.

Improving soil structure is becoming an important way to control salt accumulation. Soil structure can be badly damaged by flooding that brings in polluted water. In subsequent vegetable and fruit crops, plant water uptake, nutrient use efficiency, and photosynthesis are all impaired. The effects are seen in poor germination, burnt leaf margin, stunting, and wilting. This damage will be particularly severe with highly organic soils.

Salt accumulation in onion crops. Improving soil structure is one way of addressing this problem.

Abiotic disorders are becoming more common in commercial crops and this is likely to be reflected in gardens and allotments. That is an effect of climatic change, with generally hotter and wetter conditions interspersed by droughts and freezing events.

As a result, plant growth is erratic and exhibits abiotic disorders. Plant breeders, especially in Asia, are actively seeking genetic solutions that will create crops capable of withstanding erratic environments. In parallel,the agro-chemical industry is producing environmentally sustainable compounds and biostimulants to help combat these problems.

>> How else has climate change changed the way our gardens grow, and what can be done to alleviate its effects? Geoff Dixon explored this issue further.

Professor Geoff Dixon is author of Garden practices and their science, published by Routledge 2019.

Fossil fuels don’t just keep our motors running. They don’t just heat our homes. They form the basis of many of our everyday products.

Problem is, fossil carbon is cheap and reliable. Nevertheless, bit by bit, many companies are weaning themselves off petrochemical feedstocks.

For Unilever, that means dishwasher liquids with cleaning agents made from fermented sugar. For Croda, it means using corn to create a bio-ethylene oxide that can replace some surfactants in its personal care products.

So, what other moves have organisations made lately to create greener feedstocks?

1. Castor seed building blocks

Arkema is using castor seed in a huge range of products.

Arkema has received certification for its castor seed-based materials in products that include cosmetics, fragrances, lubricants, and pharmaceuticals.

The Paris-based speciality materials company says it will use castor seed for 100% of its monomer, polymer, and oleochemical production in its plant in Singapore.

Part of the problem with developing green feedstocks is making them financially viable and resilient. Growing these feedstocks sustainably is also important. For example, palm oil contains many products that make it a useful feedstock for those in the chemicals industry, but the way it is farmed, and its effect on the soil, are routinely criticised.

To that end, Arkema says that 13,300 hectares used to grow its crops (primarily in Western India) are sustainably farmed under the Sustainable Castor Caring for Environmental and Social Standards code.

2. Nutrient recovery

Unused nutrients from agriculture could be turned into biofertiliser.

The US Environmental Protection Agency (US EPA) is taking part in a project with Northwest Florida Water Management District and May Nursery that will demonstrate nutrient recovery technology.

According to the US EPA, the aforementioned parties will demonstrate how unused nutrients from agriculture can be captured and turned into a biofertiliser that will help farmers along the way to more circular agricultural processes.

>> How do we make a large-scale move to greener feedstocks? Several of SCI’s Corporate Partners weighed in on the issue.

3. An alternative to plastic wrapping

Thyme oil’s antimicrobial properties could help extend the shelf life of fresh food.

Researchers at Rutgers and Harvard have created a plant-based spray coating for fresh food packaging, which they believe could reduce our reliance on petroleum-based packaging.

The researchers liken their technology to the webs that shoot from Spider-Man’s wrist. Their stringy material is spun from a hair-dryer-like heating device that is shrink-wrapped over foods as diverse as avocado and sirloin steak.

Their biopolymer contains natural antimicrobial agents – thyme oil, citric acid and nisin – to fight spoilage. The wrapping can also be easily rinsed off and degrades in the soil within three days.

4. Degraded by the light

North Dakota researchers have developed a plastic that degrades in a wavelength of light not contained in the spectrum of sunlight on earth.

Biodegradation is a prickly issue. Many are sceptical about the way biodegradable plastic bags interact with the natural environment, and others argue that we should focus on upcycling products rather than downcycling them.

That’s partly what makes a new bio-based vanillin plastic so interesting. A team of US researchers from the Center for Photochemical Sciences, Bowling Green State University, and North Dakota State University has created lignin-based polymers that degrade when exposed to light of a specific wavelength – a wavelength not contained in the spectrum of sunlight that reaches the earth.

The result of this, they claim, is that up to 60% of the monomers could be polymerised again with no loss of quality. So, in theory light-triggered degradation could make it much easier to re-use these materials.

>> Natural materials, such as hemp, are becoming ever more important. So, what makes it so special?

Why do we ignore climate change and what can we do about it? That’s what Toby Park, of The Behavioural Insights Team, explained in our latest SCItalk. Eoin Redahan reports.

Do any of these describe you?

A.I recycle whenever I can, but fly twice a year.
B.I switched to a renewable energy provider, but still drive to work twice a week.
C.I make sure all unnecessary lights are switched off in the house, but eat beef occasionally
D.I plan to live a greener lifestyle, but the real difference will be made at government level.

When it comes to climate change, most of us are full of good intentions. We want to do the right thing but when change becomes too difficult or inconvenient, people (like me) lapse into old habits. In his excellent talk, why we ignore climate change and what we can do about it, Toby Park explained these contradictions and outlined how ‘nudge’ behaviour can be used to tweak our habits.

Fundamentally, Park argued that most people mean well. After surveying a couple of thousand people in the lead-up to COP26, the Behavioural Insights Team found that 67% of respondents planned to take at least five new actions to tackle climate change and 99% said they would take at least one.

So, why then do we ignore climate change en masse? ‘We are like swimmers in a stream,’ Park said. ‘We have the opportunity to swim in one direction or another but we are in a stream that has a current.’

We’re good at recycling but not as resolute when it comes to taking fewer flights.

Life is hard enough. We tend to do what is easy and affordable, but there are other reasons why we’re not falling over each other to buy electric vehicles or driving to the south of Spain for our holidays instead of flying.

The first is psychological distance. For many people, the prospect of climate change is too distant to take seriously. Unless you have woken up to find your kitchen submerged by flooding, its effects may seem far away; yet, the changes we must make are in the present.

The problem is, it’s sometimes hard to act when you cannot feel the urgency. So, people find it hard to frontload the hardship, as they see it. Park likened it to being told that you must have the hangover before you go drinking – and how many of us would choose that?

Second, we are experts at fooling ourselves. As Park noted, we’re all natural storytellers when it comes to crafting positive images of ourselves. We are the masters of cognitive dissonance. On the one hand we feel virtuous when we recycle paper, plastic, and food scraps, yet we’ll hop on a plane for that wedding in Dublin. 

‘We all have the tension of what’s in our own self interest and what’s altruistic or pro-social,’ Park said, adding a Robert Heinlein quote that encapsulates the human condition. ‘Man is not a rational animal,’ he said. Man is a rationalising animal.’

A third reason why we ignore climate change, according to Park, is that our actions rarely benefit us personally. If you buy an electric vehicle, the price of that new Tesla will sting and you’re not going to benefit from the carbon emissions saved. However, if there is collective action, everyone would benefit from cheaper electric vehicles to less filthy air.

So, what can we do about climate change?

Nudge behaviour

As was mentioned above, one of the foci of the Behavioural Insights Team is encouraging ‘nudge’ behaviour – what Park described as softly encouraging a certain type of behaviour without restricting choice. And it turns out, there are lots of ways to nudge us well-intentioned, self-centred creatures into healthier habit.

Examples of nudge behaviour are everywhere. In Switzerland, energy companies made green energy the default choice and people – out of either convenience or conscience – tended to stick with this option. Park mentioned how one canteen reduced food waste by up to 40% through the introduction of a small friction: removing the plastic trays (Thiagarajah and Getty 2013). In a similar sphere, he said Sainsbury’s Cafe increased orders of its plant-based meal options by calling items ‘field-grown’ rather than ‘meat-free’ or ‘plant-based’.

Park mentioned that we can motivate different behaviour by introducing a social element. He noted that solar panels were found to be socially contagious in California and parts of Europe, while the same has happened in the UK with the introduction of green number plates for electric vehicles.  

Comparing people to their peers is another useful way of changing habits for the better.  Benchmarking people’s behaviour against the norm – such as telling someone they use more energy than most customers – is one way of doing it. Publishing environmental performance league tables for organisations is another to encourage a climate-friendly approach.

If you don’t think these sorts of nudge behaviours don’t work, think of the humble plastic bag tax. When you take your own bags for your weekly shop, you might save just 30p on a £30 shop. But have you done it? And are you doing it still?

Unfortunately, there is no dancing around the fact that 60% of emissions reduction requires behaviour change, according to Park. So, nudge behaviour will help but we’ll be needing more power behind that elbow.

What’s in a name? Language can have a profound effect on our choices. Now, who’s for a field-grown breakfast?

‘Small nudges aren’t enough,’ he said. ‘We also need to apply this lens to systemic, transformative change. That means finding smart ways to tilt the functioning of markets.

He said that consistent, long-term decision making is not only important for individuals but for businesses too.

‘Incentives are massively important for corporations,’ he added. ‘That would generally be my first port of call. That’s where the bigger impacts can be found.’

At the end of the talk, a member of the audience asked Park, simply, if there was hope? To answer that, he offered the example of plant-based food.

Not so long ago, many plant-based meat alternatives were the preserve of the few. However, consumer interest in plant-based foods has ‘mushroomed’ in recent years and retailers have responded with a swath of new food products.

‘Change can be runaway and self accelerating, Park said, ‘and we shouldn’t forget that solutions can scale exponentially… New norms can, all of a sudden, spread very quickly.’

>> To listen to Toby’s talk, go to YouTube

Machine-made snow has made this Winter Olympics happen in Beijing, but at what cost?

If you take a look at the weather in Beijing right now, you’ll notice that it isn’t really that cold. You can enjoy daily highs of about 8°C in early February, which we’d be happy enough here in London.

These mild conditions have been a problem for the organisers of the Winter Olympics, which are currently taking place in Beijing and environs. Indeed, the distinct dearth of snow has meant that the Beijing Games have become the first to be run largely on artificial snow.

Snowmaking machines spray artificial snow on a ski slope during the FIS Ski Cross World Cup, a test event for the 2022 Winter Olympics

For some, the presence of 130 fan-driven snow generators and 300 snow-making guns spewing out machine-made snow represents a waste of resources, even if these machines are powered entirely by renewable energy.

In all, 49 million gallons of water will reportedly be used to make the Games possible. So, to say they are water-intensive is something of an understatement. However, the issues don’t end there. There is also an issue with the type of snow produced.

>> What can you do about climate change? Register for this free talk to find out more.

Some claim artificial snow creates more dangerous conditions for athletes.

According to the recent Slippery Slopes report written by the Sport Ecology Group (in conjunction with Loughborough University UK and Protect Our Winters UK), the composition of artificial snow can create dangerous conditions for the athletes. Basically, it creates a faster, harder surface that could result in more severe injuries.

The reason given for this is that artificial snow is almost 30% ice and 70% air, compared to natural snow, which is closer to 10% ice and 90% air. This ‘grittier ice-pack’ creates tougher conditions for athletes, many of whom travel at great speeds down steep slopes.

In the same report, former Winter Olympian Laura Donaldson explains why these machines create suboptimal snow. ‘The artificial snowflakes they generate have cylindrical structures (unlike the far more intricate structure of natural flakes),’ she said, ‘which mould together to form bulletproof ice conditions.’

Furthermore, this less permeable layer of ice may hinder the growth of vegetation, and the noise of the machines disrupts wildlife. In some resorts, chemicals are also added to create longer lasting snow.

At Beijing, the organisers claim not to have used chemicals in the snow-making process. However, others rely on machines and chemical-kind for a helping hand. According to the Sport Ecology Group report, a pesticide was used at the 2010 Games in Vancouver to allow the water to freeze at higher temperatures; and snow hardeners such as salt and fertiliser have been used to improve snow quality on cross-country skiing trails.

If hosting the Winter Olympics in an area without much snow seems crazy to you, it might not be quite as daft as you think. The bleak reality is that global warming is reducing the number of venues that can host this enormous event without artificial help.

According to an academic paper by Scott et. al. in 2014, only six of the last 19 Winter Olympics host cities will still have the climatic conditions to do so by the 2080s. Of course, that doesn’t take artificial snow into account.

So, when you see Qatar being awarded the 2050 Winter Games, don’t tell me you haven’t been warned.

How much soil cultivation do you need for your vegetables? Professor Geoff Dixon explains all.

Cultivating soil is as old as horticulture itself. Basically, three processes have evolved over time. Primary cultivation involves inversion which buries weeds, adds organic matter and breaks up the soil profile, encouraging aeration and avoiding waterlogging.

Secondary cultivation prepares a fine tilth as a bed for sowing small seeded crops such as carrots or beetroot. In the growing season, tertiary cultivation maintains weed control, preventing competition for resources (illustration no. 1) such as light, nutrients and water while discouraging pest and disease damage.

Lettuce and seed competition

The onset of rapid climate change encouraged by industrialisation has focused attention on preventing the release of carbon dioxide into the atmosphere. Ploughing disturbs the soil profile and accelerates the loss of carbon dioxide from soil.

It is also an energy intensive process. Consequently, many broad acre agricultural crops such as cereals, oilseed rape and sugar beet are now drilled directly without previous primary cultivation. An added advantage is that stubble from previous crops remains in situ over winter, offering food sources for birds. The disadvantages of direct drilling are: increased likelihood of soil waterlogging and reduced opportunities for building organic fertility by adding farmyard manure or well-made composts.

Overall, primary and secondary cultivation benefit vegetable growing. The areas of land involved are far smaller and the crops are grown very intensively. Vegetables require high fertility, weed-free soil, good drainage and minimal accumulation of soil-borne pests and diseases.

Frost action breaking down soil clods

Digging increases each of these benefits and provides healthy physical exercise and mental stimulation. Frost action on well-dug soil breaks down the clods (illustration no. 2). Ultimately, fine seed beds are produced by secondary cultivation (illustration no. 3), which encourage rapid germination and even growth of root and salad crops.

Tertiary cultivation to prevent weed competition is also of paramount importance for vegetable crops. Competition in their early growth stages weakens the quality of root and leafy vegetables, destroying much of their dietary value. Regular hoeing and hand removal of weeds are necessities in the vegetable garden.

Raking down soil producing a fine tilth

Ornamental and fruit gardens similarly benefit from tertiary cultivation. Weeds not only provide competition but are also unsightly, destroying the visual image and psychological satisfaction of these areas.

Lightly forking over these areas in spring and autumn encourages water percolation and root aeration. Once established, ornamental herbaceous perennials and soft and top fruit areas benefit greatly from the addition of organic top dressings. Over several seasons these will augment fertility and nutrient availability.

Written by Professor Geoff Dixon, author of Garden practices and their science, published by Routledge 2019.

At COP26, Nikita Patel co-hosted the Next-Gen debate, where an inspiring group of young people discussed how chemistry is tackling climate change. The PhD student at Queen Mary University of London shares her experience.

While the United Nations Climate Change Conference (COP26) may be over, there is still plenty to be done in the fight against climate change. We’ve seen what can be achieved when we work together and no doubt science will play a key role.

On Thursday 4 November, I had the privilege of co-hosting the Countdown to Planet Zero Next-Gen debate organised by SCI to showcase the work being carried out by our young and innovative scientists to tackle climate change. It was a real pleasure to share the stage and hear from some great scientists, exploring the themes Fuels of the Future, Turning Waste into Gold and Engineering Nature. The event gave the audience the opportunity to question and challenge the panel members on their climate change solutions.

Panel L-R: Dominic Smith, Natasha Boulding, Clare Rodseth, Jake Coole, Nikita Patel, Oliver Ring (Brett Parkinson joined virtually).

While I was feeling nervous about my hosting duties, I was very excited at the same time as I knew how important it was to educate the audience, whether they were members of the public or aspiring scientists, on how science is crucial in battling the climate emergency.

An important part of my role as a host was to ensure the incoming questions and comments were understood by all, given the mixed audience attending. This highlighted how essential good science communication is to prevent misunderstandings and the spread of misinformation.

It was brilliant to see how engaged the audience were from the flurry of questions that came in during the session, so much so that we didn’t manage to get through all of them! There were a wide variety of questions aimed at particular panellists but also towards the panel as a whole. It was thought-provoking to hear how scientists from different backgrounds offered their own perspectives on the same topic.

4 November was also Energy Day at COP26 and the atmosphere was buzzing! I learnt a lot from attending the Green Zone, not only from our panellists but from all the exhibitors present too. I appreciate the small, individual actions we can each take that will make a difference but also the need to work together to achieve the common goal of fighting climate change. It was clear to see how science and business go hand in hand to provide solutions to society and how interdisciplinary collaboration is key.

The result of our poll question: ‘Do you think that science is pivotal in providing climate change solutions?’ spoke for itself, with a resounding yes from 100% of the audience participants! This was a very positive outcome and showed that it is not all doom and gloom when it comes to discussing the climate crisis.

On a personal level, I'm going to continue implementing some simple changes like using public transport more, eating more vegan food and flying less and aim to keep the discussion going with my peers as the climate emergency is far from over.

SCI team, panellists and hosts.

I hope the youth panel event has inspired the next generation of scientists and showcased some of the exciting work that is going on behind the scenes which people may not realise and ultimately, that there is hope in science.

>> To rewatch the event, the recording is available on the COP26 YouTube channel: Countdown to Planet Zero Combating climate change with chemistry | #COP26, and on our Climate Change Solutions hub.

>> Want to read more about the technologies discussed by our panel? Read our event review: https://www.soci.org/blog/2021/11/2021-11-05-cop26-review.

A group of inspiring young scientists took centre stage at COP26 on 4 November to show how the next generation of chemists is finding tangible climate change solutions.

In a day dominated by what countries pledged to stop doing at COP26, such as pursuing coal power and financing fossil fuel projects overseas, it was refreshing to learn about low-carbon technologies and the young people driving their development. At the Next Gen forum, we heard from an array of young chemists, all associated with SCI, who are at the sharp edge of this change.

We heard from Brett Parkinson, Senior Engineer of Low Carbon Fuels and Energy Technologist at C-Zero, who is working on commercialising a way to decarbonise natural gas. The California-based company’s technology converts the natural gas into hydrogen and solid carbon to provide a clean energy source while sequestering the carbon; and the aim is to have this process up and running next year.

Natasha Boulding is building towards Net Zero a different way – with a greener concrete. The CEO and Co-founder of Sphera has developed a lightweight carbon negative additive using waste plastics that aren’t currently being recycled. She says the company’s blocks are the same strength and price as existing concrete blocks, but with 30% more thermal insulation. There is also the added benefit of reusing waste materials that would otherwise have gone to landfill or been incinerated.

Another solution discussed by Dominic Smith, Process Development Engineer at GSK, reduces energy consumption through green chemistry. He is trying to find greener ways to make medicines using enzymes. These enzymes, which can be found in plants and soil, replace chemical synthesis steps to cut energy consumption during processing and reduce hazardous waste.

Panel (left to right): Dominic Smith, Natasha Boulding, Clare Rodseth, Jake Coole, Nikita Patel, and Oliver Ring (Brett Parkinson spoke via video link).

It was apparent from the discussion that many solutions will be needed for us to reach our climate change targets. On the one hand, Jake Coole, Senior Chemist in Johnson Matthey’s Fuel Cells team, is working on membrane electrode assembly for hydrogen fuel cells to help us transition to hydrogen-powered buses and trucks.

At the same time, Clare Rodseth, an Environmental Sustainability Scientist at Unilever, has been using lifecycle assessments to reduce the environmental impact of some of the 400 Unilever brands people use all over the world every day. For example, this work has helped the company move away from petrochemical ingredients in its home care products. ‘Even small changes,’ she said, ‘have the potential to bring about large-scale change.’

Incremental change

However, for each of the technologies discussed, barriers remain. For Coole and co., having a readily available supply of hydrogen and charging infrastructure will be key. And for Dominic Smith and his colleagues, the use of enzymes in green chemistry is still in its infancy; and getting enzymes that are fast enough, stable enough, and produce the right yield is difficult. Nevertheless, he noted that manufacturers are now using enzymes to produce the drug amoxicillin, reducing the carbon footprint by about 25%

And some things will take time to change. Natasha Boulding noted that concrete is the second most used material in the world after drinking water, and we simply can’t create many green technologies, such as wind turbines, without concrete foundations.

She said the construction industry is quite traditional but also pointed to perceptible change, with the green concrete market growing and companies becoming increasingly aware of their carbon footprints.

Collaboration was seen as crucial in producing climate change solutions.

The reality is that global action on climate change is recent. As Brett Parkinson said: ‘the main reason we’re talking about it now is that there’s a driver to do it. Until the last decade, the world hadn’t cared about CO₂ emissions. They just talked about caring about it.’

How pivotal is science in all of this?

So, what could be done to make climate action more effective? For Parkinson, effective policy is key. He argued that if the market isn’t led by policies that encourage low-carbon innovations, then it won’t work as needed. ‘It all starts with effective decarbonisation policy,’ he said. ‘Legacy industries are very resistant to change. If you don’t have strong and consistent policies… then they’re not going to adapt.’

Another key to our low-carbon evolution is collaboration, and the SCI provides a confluence point for those in industry and academia to work together to produce innovative, low-carbon products. As Clare Rodseth said: ‘Collaboration is really important – linking up people who can actually come together and address these problems.’

As the discussion came to a close, you had the impression that the debate could have gone on for much longer. ‘Hopefully, we’ve demonstrated that there is action, and it’s being driven by young people like our panellists today,’ summarised Oliver Ring, the event’s co-Chair, before asking for the result of the audience poll.

The question: How many of those watching believed that science is pivotal in providing climate change solutions? 

The answer: Just the 100%.

>> Thank you to Johnson Matthey for sponsoring the event, to the speakers for sharing their time and expertise, and to co-chairs Nikita Patel and Oliver Ring for doing such an excellent job.

This Thursday at COP26, an inspiring panel of young scientists will discuss innovations that will help us mitigate climate change. So, what can we expect?

Millions of young people are frustrated by climate change inaction. Indeed, according to a University of Bath study, 60% of the next generation feel overwhelmed by climate anxiety. Often, the proposed solutions seem vague and intangible – well-intentioned ideas that drift away when the political winds shift.

And yet, when you see the ingenuity of young scientists, business people, and activists, it’s hard not to be excited. Undoubtedly, politics and our legal system will play a huge role in the drive to reach Net Zero, but arguably science will play the biggest role in transforming the way we live. Just think of the falling cost of generating solar power, improvements in battery chemistry for electric vehicles, the development of sustainable construction materials, and the rapid rollout of Covid-19 vaccines.

Tangible solutions

This Thursday at COP26, SCI will host the Next Gen youth forum event where the panellists discuss the climate change solutions they are working on right now and how they are being applied by industry. In the Countdown to Planet Zero roundtable, these scientists – drawn from within SCI’s innovation community – will explain their work to a global audience and the impact it will have on climate change.

They will discuss innovation in three key areas: topics of fuels of the future, turning waste into gold, and engineering nature.

The next generation has mobilised and is creating solutions to help avoid climate change disaster.

The panel will be chaired by two very capable young scientists. Oliver Ring is Senior Scientist at AstraZeneca’s large-scale synthesis team and Chair of SCI’s Young Chemists’ Panel, and passionate climate advocate Nikita Patel is a PhD student at Queen Mary University of London’s Centre of Translational Medicine and Therapeutics and STEM Ambassador for schools.

The other panel members include Clare Rodseth, of Unilever’s Environmental Sustainability Science team, who brings lifecycle analysis to product innovation to make products more sustainable.

Jake Coole, Senior Chemist in Johnson Matthey’s Fuel Cells team, is involved in the scale-up of new processes and next generation manufacturing, and Dominic Smith, Process Development Engineer at GSK, who is interested in engineering biology to create sustainable manufacturing processes.

Also present will be Dr Brett Parkinson, Senior Engineer of Low Carbon Fuels and Energy Technologist at C-Zero – a California-based startup that works on the decarbonisation of natural gas. In 2019, Brett was awarded an SCI scholarship for his research.

The lineup also includes Dr Natasha Boulding, CEO and Co-founder of Sphera Limited, a speciality materials company that has created carbon negative concrete blocks made from aggregate including waste plastic. According to Natasha, whose company also won SCI’s Bright SCIdea challenge in 2019: “In terms of combating climate change, interdisciplinary collaboration is the key. No one discipline has the answer to solve our biggest challenges – but together diverse minds can.’

>> Would you like to take part in BrightSCIdea and be in with the chance of winning £5,000? Be part of it.

Watch the event online

SCI is proud to be associated with these enterprising young scientists and the imaginative solutions they are developing to mitigate the effects of climate change.

‘As a global innovation hub, SCI wants to show how the next generation of scientists is actively developing solutions,’ said Sharon Todd, SCI CEO.

Sharon Todd, SCI CEO

‘Our COP26 youth forum debate will profile the work of young scientists and entrepreneurs addressing climate change in their work. This next generation of innovators has the power to change our world’s tomorrow.’

If you’d like to see the climate change solutions of tomorrow, register to watch the virtual event here.

The theme of the 2021 World Economic Forum’s Davos Agenda was ‘The Great Reset’ and how the world might recover from the effects of Covid-19. Because of the current circumstances, the forum was split into two parts, with a virtual meeting held January 25-29 and an in-person gathering planned for May 13-16, in Singapore.

Each day of the January summit was dedicated to discussing a key area for recovery. On Monday, January 25, the focus was on designing cohesive, sustainable and resilient economic systems. On Tuesday, delegates discussed how to drive responsible industry transformation and growth, while on Wednesday they spoke about enhancing the stewardship of our global commons. Thursday's talks centred on harnessing the technologies of the Fourth Industrial Revolution, and on Friday attendees discussed ways to advance global and regional cooperation.

With the International Labor Organization jobs report, published at the start of the week, stating that at least 225 million jobs vanished worldwide over the past year (four times more than the 2008 global financial crisis) and concerns that vaccine nationalism will see the pandemic continue to ravage many less wealthy nations, much of the talk was around equality and unity.

Christine Lagarde, President of the European Central Bank, spoke in Monday's meeting. ‘Once we’re through to the "second phase" of the 2021 Covid-19 recovery,’ Lagarde said, ‘it is most likely going to be a new economy, which will be associated with positive developments and also with challenges.’ Many advanced economies, she noted, particularly in Europe, have jumped forward in terms of digitalisation, some by up to seven years.

Christine Lagarde, President of the European Central Bank, has called for continued support for the digital-centred, post-pandemic economy. | Credit: Alexandros Michailidis / Shutterstock.com

She added that it is likely that there will be a 20% increase in the amount of people working from home post-pandemic, which will have an impact on many economies, and claimed that technological changes are already having positive effects. She said that it is critical to continue ‘favouring and supporting investment into this new economy’ and that on the fiscal and monetary policy front, authorities will have to stay the course and continue to support. At the same time, investment will have to be focused on laying the ground for a new economy.

Ursula von der Leyen, President of the European Commission (EC), agreed about the increase in digitalisation, and reported that the EU hopes ‘the 2020s can finally be Europe’s Digital Decade’, highlighting a number of investments to boost this process, including the startup scenes in cities such as Sofia and Lisbon.

However, she warned that there is a ‘darker side of the digital world,’ noting the assault on Capitol Hill in the US and making clear that ‘The immense power of the big digital companies must be contained. She spoke of the EC's plans ‘to make internet companies take responsibility for content, from dissemination to promotion and removal, and highlighted the Commission’s new rulebooks, the Digital Services Act and the Digital Markets Act.

Ursula von der Leyen, President of the European Commission, believes the 2020s can be Europe’s ‘Digital Decade’. | Credit: John Smith Williams / Shutterstock.com

She invited the US to work together to: ‘Create a digital economy rulebook that is valid worldwide: it goes from data protection and privacy to the security of critical infrastructure. A body of rules based on our values: Human rights and pluralism, inclusion and the protection of privacy.’

Marc Benioff, Salesforce CEO, made a noteworthy intervention in his panel discussion, claiming, ‘There has been a mantra for too long that the business of business is business, but today the business of business is improving the state of the world.’ He added that, while there were many CEOs who had been ‘bad actors,’ others had used their considerable resources to help fight the pandemic.

Many speakers noted a shift towards sustainability in investments, with others demanding more change and faster. Of the latter, Mark Carney, Special Envoy for Climate Action and Finance to the UN, said bluntly, ‘if you are part of the private financial sector and you are not part of the solution […] you will have made the conscious decision not to be aligned to net zero […] if you’re not in, you’re out because you chose to be out.’

It could be concluded that there was a great deal to feel positive about, but the circumstances are difficult. Now we will see whether the attendees of the World Economic Forum can deliver on their inspiring rhetoric.