What will the world...

... look like:

Global temperatures will rise 2.5C within the next century even if the world hits its targets for cutting greenhouse gas emissions, according to the scientist leading research into the issue.

Consequences could include widespread starvation, as farm yields fall 50% in parts of Africa, water shortages for 300m and the destruction of 20-30% of species. If targets are missed the rise could reach 4C.

Rajendra Pachauri, chairman of the Intergovernmental Panel on Climate Change, issued his warning in London last week.

“We have come to the conclusion that global warming is unequivocal,” he said. “What is particularly worrying is that it is accelerating.”