Billions of dollars of US federal funding for green energy projects hangs in the balance.

Indian start-ups are using local materials and innovative ideas to make useful and affordable products.

Cooling systems that avoid the use of polluting refrigerants are being launched.

Challenge yourself with this edition of our monthly AI or real quiz and see if you can get top marks!

Whole TV shows shot in one long take are made possible by new lightweight cameras.

Giant tyre firms are testing tyres that can survive conditions on the Moon and Mars.