(PhysOrg.com) -- New research challenges the controversial theory that the impact of an ancient comet devastated the Clovis people, one of the earliest known cultures to inhabit North America.
Archaeology
Sep 29, 2010
7
1
An international team of scientists led by researchers at the University of Hawaii at Manoa have found no evidence supporting an extraterrestrial impact event at the onset of the Younger Dryas ~13000 years ago.
Earth Sciences
Dec 8, 2009
13
0
(PhysOrg.com) -- The enduringly popular theory that the Chicxulub crater holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago, is challenged in a paper to be published ...
Earth Sciences
Apr 27, 2009
14
5
New research, reported today in Nature Ecology & Evolution, has for the first time validated at scale, one of the theories that has underpinned ecology for over half a century. In doing so, the findings raise further questions ...
Plants & Animals
Sep 25, 2023
0
6
About 12,800 years ago when the Earth was warming and emerging from the last ice age, a dramatic and anomalous event occurred that abruptly reversed climatic conditions back to near-glacial state. According to James Kennett, ...
Earth Sciences
May 21, 2013
56
6
An interdisciplinary team of scientists from seven U.S. institutions says a disregard of three critical protocols, including sorting samples by size, explains why a group challenging the theory of a North American meteor-impact ...
Earth Sciences
Sep 18, 2012
4
1
The transition to an environmentally sustainable economy has begun, but it will be a generation (about twenty years) before we will see moderation of global warming. The cost of reducing climate pollution faster would be ...
Environment
Jul 17, 2023
0
23
How the Earth got its moon is a long debated question. The giant impact theory – which states that the moon formed from the a collision between the early Earth and a rocky body called Theia—has become the front runner ...
Space Exploration
Mar 10, 2020
12
113
The moon's consistent appearance in the sky each night may lull earthlings into a sense of familiarity, but the moon is actually a puzzling place. It lacks an atmosphere and is bone-dry; it can hardly claim a central iron ...
Space Exploration
Jun 13, 2019
0
11
Comets always seem to bring 'em out of the wood work.
Space Exploration
Apr 30, 2013
19
0
