Green Tech

China hopes to increasingly control when and where it rains. Ally Hirschlag examines why its ambitious cloud seeding plan is so controversial – and whether it actually works.

As nations posture over access to rare earth deposits, scientists say these coveted materials are hiding in plain sight – and can be harvested without any conventional mining at all.

Formula E, an all-electric racing competition, is pioneering technology that could find its way into vehicles at a charging station near you.

Some say advances in perovskite solar cells mean we are on the brink of the next solar energy revolution. Others aren't so sure.

Naturally occurring "white hydrogen" lies in vast reservoirs beneath our feet – now the gold rush of the clean energy era is beginning.

Batteries for electric vehicles are notoriously difficult to recycle, but growing demand for the rare metals they contain is leading to innovative new ways of retrieving them.

To protect crops from rising droughts, scientists are looking to the genes of a small group of plants that can survive months of drought then regreen within hours.