Big cat kill caught on BBC webcam

'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.

Minister checks on science exams
The science minister is to examine GCSE and A-level papers to check they are not being "dumbed down".

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.

Nasa delays its next Mars mission
The US space agency (Nasa) has delayed the launch of its Mars Science Laboratory rover mission from 2009 to 2011.