Chilling Future for Global Warming?

Rolling Stone's October edition has a fascinating piece on where British scientist James Lovelock sees global warming headed. Jeff Goodell summarizes Lovelock's outlook: "...the scale of the catastrophe that awaits us will soon become obvious. By 2020, droughts and other extreme weather will be commonplace. By 2040, the Sahara will be moving into Europe, and Berlin will be as hot as Baghdad. Atlanta will end up a kudzu jungle. Phoenix will become uninhabitable, as will parts of Beijing (desert), Miami (rising seas) and London (floods). Food shortages will drive millions of people north, raising political tensions." How on target is Lovelock? Who knows, but just to contemplate the future as he sees it is chilling and should compel us to act now.