Researchers at Bern University say last summer is likely to have been the hottest since at least 1500

Their study, which was published in "Science" magazine, examined European temperatures over the past 500 years The findings confirmed that global warming is indeed taking place. Not only was 2003 the hottest summer for 500 years, but winter and summer temperatures in the three decades from 1973 to 2003 were the highest since 1500 too. […]