Stark warning over climate change
The world is likely to suffer a temperature rise of more than 3C, says the UK government's chief scientist.
Tony Blair wants a global consensus on stabilising greenhouse gas emissions, blamed for climate change. The government shares the EU's 2C limit.
The US refuses to cut emissions and those of India and China are rising.
The government report says a 3C rise would cause:
A drop worldwide of between 20 and 400 million tonnes in cereal crops
About 400 million more people at risk of hunger
Between 1.2bn and 3bn more people at risk of water stress
This is getting serious
BBC Science - Nature