Arctic expert predicts final collapse of sea ice within four years

One of the world's leading ice experts has predicted the final collapse ofArctic sea ice in summer months within four years.

In what he calls a "global disaster" now unfolding in northern latitudes as the sea area that freezes and melts each year shrinks to its lowest extentever recorded, Prof Peter Wadhams of Cambridge University calls for "urgent" consideration of new ideas to reduce global temperatures.

In an email to the Guardian he says: "Climate change is no longer something we can aim to do something about in a few decades' time, and that we must not only urgently reduce CO2 emissions but must urgently examine other ways of slowing global warming, such as the variousgeoengineering ideas that have been put forward."

Read more here: http://www.guardian.co.uk