Originally published 10/03/2013
Searching for spearheads in the Rio Grande Rift Valley.
Originally published 01/31/2013
Jan. 30, 2013 — Rebutting a speculative hypothesis that comet explosions changed Earth's climate sufficiently to end the Clovis culture in North America about 13,000 years ago, Sandia lead author Mark Boslough and researchers from 14 academic institutions assert that other explanations must be found for the apparent disappearance."There's no plausible mechanism to get airbursts over an entire continent," said Boslough, a physicist. "For this and other reasons, we conclude that the impact hypothesis is, unfortunately, bogus."In a December 2012 American Geophysical Union monograph, first available in January, the researchers point out that no appropriately sized impact craters from that time period have been discovered, nor have any unambiguously "shocked" materials been found....
- Hull of Confederate Submarine H.L. Hunley Found 150 Years Later
- U.S. Textbook Skews History, Prime Minister of Japan Says
- Recalling a Film From the Liberation of the Camps
- Skull Fossil Offers New Clues on Human Journey From Africa
- Are crude conspiracies right? Research shows nations really do go to war over oil
- Ronald Suny says historians have shied away from exploring the roots of the Armenian genocide for fear of taking attention away from the victims
- Columbia University professors Eric Foner, Alan Brinkley, and Alice Kessler-Harris to retire
- A powerhouse appropriations subcommittee is now headed by a historian: Republican Rep. Tom Cole (OK)
- Slavic scholars divided over a scholarship sponsored (and withdrawn) by Stephen F. Cohen
- Claire Strom to Step Down as Editor of Agricultural History