BBC: The Arctic ice-cap, a permanent feature for at least 100,000 years, could vanish in summertime far sooner than predicted, a leading scientist says. Professor Peter Wadhams, from the University of Cambridge, told BBC News he has brought forward his estimates of the ice-cap’s demise. He believes the ice is now so thin that almost all of it will disappear in about a decade. He says it will become seasonal, forming only during the winter. He told the BBC: “By 2013 we …