During summer 2007 the Arctic sea-ice shrank to the lowest extent ever observed. The role of the ...
In recent years, a substantial reduction of the sea ice in the Arctic has been observed. At the s...
Autumn 2006 was extraordinarily mild in many parts of Europe. Near-surface temperatures were more...
Replying to: P. W. Thorne Nature 455, doi:10.1038/nature07256; A. N. Grant, S. Bro¨nnimann & ...