Rosetta set for asteroid fly-by

Robots fly into Antarctic skies
A pair of lightweight, robotic planes have made the first unmanned flights over Antarctica's icy expanses.

Hypersonic passenger jet designed
A firm says it has designed a hypersonic passenger jet to fly from Europe to Australia in less than five hours.

'Solar taxi' goes round the world
Swiss adventurer Louis Palmer takes his solar-powered car to the UN climate change talks after a round-the-world trip.

Seawater holds key to future food
Growing crops in salt water is becoming necessary to overcome shortages of fresh water, scientists say.

Rock art reveals unknown bat
An ancient cave painting in Australia depicts a previously unknown species of large bat, according to researchers.