Put our latest news and photos on your Web page or desktop—automatically updates! See Sample
Saturday, August 30, 2008 |
Saturday, August 30, 2008 |
Photo: Ancient "Megadroughts" Struck U.S. West, Could Happen Again, Study SuggestsNow a study of tree rings dating back to A.D. 762 shows that the region has experienced droughts in the past lasting more than 60 years—an ominous finding that suggests the current drought could be that start of another decades-long dry spell. Photograph by David McNew/Getty Images
|
ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
|
ADVERTISEMENT
|