Earth-Wide A/C?

The great science blog, Science-a-go-go, posted in an interesting story last night about an interesting last ditch solution to global warming problems, should the ice caps melt and, as Al Gore predicted, the sea start filling up lower Manhattan. The great idea? Some "sun parasols," according to University of Arizona’s Roger Angel.

"Angel’s plan involves launching a flotilla of trillions of small free-flying spacecraft a million miles above Earth into an orbit aligned with the sun, called the L1 Lagrange orbit. The spacecraft would form a long, cylindrical cloud about 4,000 miles in diameter and 60,000 miles in length. About 10 percent of the sunlight passing through the length of the cloud would be diverted away from Earth, uniformly reducing sunlight by about 2 percent over the entire planet. Enough to balance the heating caused by a doubling of atmospheric carbon dioxide in Earth’s atmosphere, believes Angel."

Not a half bad plan, but, if you ask me, I think we might be a little better off beating this problem to the pass, parking our harms, and enjoying a few crisp, fall bike rides.