First animals 'came from lakes'

Contrary to current evolutionary beliefs, the first animals on Earth may have emerged from lakes rather than oceans, new research suggests.

The discovery of what are thought to be the oldest known animal fossils in ancient lake deposits pose a challenge to the idea that complex life evolved in seas before moving on to land much later.

Marching soldiers could power gadgets

British researchers are working to produce battery-free packs for ground soldiers that will reduce the load they have to carry by up to 22lbs (10 kilograms).

The project includes developing technology that will power equipment such as torches and radios using energy generated from the flexing knees and stomping feet of the soldiers.

Solar blimp attempts Channel flight

A pioneering solar-powered blimp designed by a group of French university students will undertake an English channel crossing in the first manned flight of its kind next month.

The Nephelios has two twin-bladed propellers and semi-flexible photovoltaic panels on top which collect solar energy that powers an electric motor. Its average speed is 25mph.

The eco-friendly aircraft is 72ft long and 18ft in diameter, makes little noise and is aimed at being an alternative to carbon-powered airships.