Jan. 26, 2009 | The greatest task of the Obama administration — and the next 10 presidents — is to avoid catastrophic global warming. The latest science warns that the unstable West Antarctic ice sheet has been warming significantly since the 1950s, the rate of Greenland summer ice loss tripled last year, and the planet as a whole lost 2 trillion tons of ice in the last five years. The best mid-range estimate for sea level rise by the year 2100 is 5 feet, much higher than U.N. scientists projected just two years ago.
Fortunately, Obama clearly gets it. He devoted more of his inaugural address to clean energy and global warming than even the strongest advocate could have imagined, asserting, “We will work tirelessly to … roll back the specter of a warming planet.” More important, he has assembled a team with unmatched knowledge and commitment to solve the climate problem.
But the path toward a carbon-reduced future will not be an easy one….
OSLO (Reuters) – The once-green Sahara turned to desert over thousands of years rather than in an abrupt shift as previously believed, according to a study on Thursday that may help understanding of future climate changes.
And there are now signs of a tiny shift back towards greener conditions in parts of the Sahara, apparently because of global warming, said the lead author of the report about the desert’s history published in the journal Science.
The study of ancient pollen, spores and aquatic organisms in sediments in Lake Yoa in northern Chad showed … ENN: Sahara dried out slowly, not abruptly: study
Why bother? That really is the big question facing us as individuals hoping to do something about climate change, and it’s not an easy one to answer.