 |
| Phillip Colla |
Ever since humans first saw the furrows etched out behind the boulders in Death Valley's Racetrack Playa, there have been theories about how and why the huge stones could possibly move along the flat terrain. They ranged from elaborate prank to slippery algae, but none held up to scrutiny. Well, now, thanks to video, GPS, two cousins, and a planetary scientist, the mystery has been solved (story, video): http://www.livescience.com/47585-death-valley-moving-rocks.html
No comments:
Post a Comment