Natural pest fighters: sustainable solutions for food
A new range of natural pest deterrents is in development – including an insecticide to protect honeybees based on venom from the Australian funnel web spider, one of the world’s most poisonous spiders, Jasmin Fox-Skelly reports
Cutting methane emissions: from cows to catalysts
Cutting CO2 emissions is a central plank of policies bent on curbing global warming. But with 86 times the global warming potential, methane gas is also easier and cheaper to remove, Lou Reade reports
The Sodium advantage
Battery experts expect sodium-ion to emerge as a key player, powering everything from massive grid storage facilities to power tools to small scooters and electric vehicles. Anthony King reports
Sustainable desalination
With just 3% of the Earth’s water available as freshwater, desalination technologies allow us to get the water we need from inexhaustible, salty seawater. But relying on desalination could create new problems, XiaoZhi Lim reports