Who do you want to see receive $20,000 to put their Earth-saving idea into action? Check out the ten Green Effect finalists, and until July 20 you can vote—up to once a day—for your favorite idea!
Friday, July 10, 2009 |
Friday, July 10, 2009 |
Photo: Extreme Global Warming Fix Proposed: Fill the Skies With SulfurA scientist has proposed re-creating this effect by seeding the upper atmosphere with sulfur to help stave off the effects of global warming. Photograph courtesy Dave Harlow/USGS
|
ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
|
ADVERTISEMENT
|