Brazil president defends biofuels

£250m for new wave of scientists
£250m is to be invested in training scientists and engineers to tackle the problems Britain faces in the future.

'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.