There’s this very interesting and acute remark in a correspondance in Nature this week, about global warming. Among the very first papers dealing with this fundamental and applied question by J. S. Sawyer (Nature 239, 23–26; 1972), was a prediction that now proved to be strikingly accurate about the expected increase in temperature (0.6°C) :
In fact the global surface temperature rose about 0.5 °C between the early 1970s and 2000. Considering that global temperatures had, if anything, been falling in the decades leading up to the early 1970s, Sawyer’s prediction of a reversal of this trend, and of the correct magnitude of the warming, is perhaps the most remarkable long-range forecast ever made.
(Neville Nicholls. Nature 448, 992. 30 August 2007).
So when do we start doing something? (OK, we are already trying, but let’s not be that shy).



A few 







