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....
- Support grows for Smithsonian museum of women’s history
- History Lesson: How the Democrats pushed Obamacare through the Senate
- Oldest women’s college in US – Wesleyan College in Macon, Georgia – seeks to atone for Ku Klux Klan’s legacy
- Ancient Egyptian Writing: New Symbols Reveal Development Of Hieroglyphics
- Dr. Suess museum chided for failing to address head-on his racist statements during WW2
- Lonnie Bunch says the nooses found at the Smithsonian recently show why black people cannot get over the past
- It’s Time for Historians of Slavery to Listen to Economists
- Researcher: "Actually, Yes It Is a Discovery If You Find Something in an Archive That No One Knew Was There."
- The Trump team is obsessing over Thucydides, the ancient historian who wrote a seminal tract on war
- Historians defend scholar who studies Poland and Holocaust