2 March 2022
The batteries we need to power the transition to 100-per-cent renewable electricity require rare metals, and that means destructive mining – but researchers are working on alternatives
2 March 2022
Remove a billion tonnes of methane from the air and we could cool Earth by 0.2°C, extending the window of opportunity to remove carbon dioxide before it is too late
2 March 2022
Converting sunlight into liquid fuel through artificial photosynthesis would be a huge environmental victory – and the latest prototypes look surprisingly effective
4 August 2021
As energy access improves in low-income countries, there is an opportunity to go straight to clean technologies, says Jim Watson
26 May 2021
Hydrogen has the potential to be the green energy source of the future, and Japan wants to use symbols like the Olympic and Paralympic torches to tout its benefits
3 February 2021
Hydrogen is widely touted as a green fuel for everything from cars and planes to heating homes. But all too often it has a dirty secret
11 November 2020
A thin gel layer that mimics camel fur can help insulate objects without the need for electricity, and could cool food, medical supplies or even buildings
12 August 2020
Making medicines and complex materials is messy and wasteful. Using electric fields as catalysts could make chemistry far cleaner
27 April 2020
A 3D printed grate can be used to make a smart window that blocks heat from sunlight out in the summer while letting it through in the winter, conserving energy
11 March 2020
A self-powered device that generates electricity from the wind can also absorb and break down harmful nitric oxide and nitrogen dioxide from the air
