Just 38 per cent of U.S. schoolchildren were taught that climate change is linked to fossil fuels, with many teachers spending less than an hour a year on the subject

Researchers say the fruit grown could be a replacement for staple crops under threat from climate change.

Barack Obama will unveil a national climate change plan on Tuesday, offering the first real glimpse of how he intends to make good on one of the most stirring promises of his inaugural address.