UK airline Thomson Airways launches aircraft powered by waste cooking oil

Landmark ICPCC report says supply of renewable power can meet global demand

Shot from the sky, the farmlands of northeastern Spain look like abstract paintings.

Is concentrated solar power the future of renewable energy? A Guardian video shines a light on the world's first commercial solar tower.

Computer-generated fantasy worlds "recycled" from famous artworks.

A look at 350.org's planet-scale art project for the climate.

African country reveals plans for world's biggest solar plant.

But do the functional benefits meet the aesthetic aims?