....Global warming .... has become a runaway train that cannot be stopped. .... The warming of Earth and increases in sea levels "would continue for centuries … even if greenhouse gas concentrations were to be stabilized," according to a 20-page summary of the report that was leaked to wire services..../ The report also says scientists' "best estimate" is that temperatures will rise 3.2 to 7.8 degrees by 2100. In contrast, the increase from 1901 to 2005 was 1.2 degrees.

The report also projects that sea levels could rise by 7 to 23 inches by the end of the century, and perhaps an additional 4 to 8 inches if the recent melting of the Greenland ice sheet and the Larsen B ice shelf in western Antarctica continues at current rates. ... such an increase would inundate many low-lying areas around the world, including islands such as Kiribati in the western Pacific Ocean and marsh areas near New Orleans. Such flooding would affect more than 10 million people.

The report also predicts a melting of Arctic ice during summers and a slowing of the Gulf Stream. LA Times