An interesting climate change article with a link to BBC news.
One of America's top scientists has said that the world has already entered a state of dangerous climate change.
In his first broadcast interview as president of the American Association for the Advancement of Science, John Holdren told the BBC that the climate was changing much faster than predicted.
"We are not talking anymore about what climate models say might happen in the future.
"We are experiencing dangerous human disruption of the global climate and we're going to experience more," Professor Holdren said.
He emphasised the seriousness of the melting Greenland ice cap, saying that without drastic action the world would experience more heatwaves, wild fires and floods.
He added that if the current pace of change continued, a catastrophic sea level rise of 4m (13ft) this century was within the realm of possibility; much higher than previous forecasts.
To put this in perspective, Professor Holdren pointed out that the melting of the Greenland ice cap, alone, could increase world-wide sea levels by 7m (23ft), swamping many cities.