Predicting waves could double ocean energy capture

Surfers spend half their time on the water sitting upright on their boards, scanning the horizon for the next suitable wave.

Arrival of plants triggered ice ages

The arrival of the first plants 470 million years ago triggered a series of ice ages.

Bomb-proof curtain expands during blast

A new material that gets thicker, not thinner, when stretched is being developed to provide better protection from bomb blasts.