41,000 years ago, a complete and rapid reversal of the geomagnetic field occured. Magnetic studies of the GFZ German Research Centre for Geosciences on sediment cores from the Black Sea show that during this period, during ...
Earth Sciences
Oct 16, 2012
11
40
If you think a Chihuahua doesn't have much in common with a Rottweiler, you might be on to something.
Archaeology
Jan 23, 2012
3
0
In the Atlantic Ocean, a giant 'conveyor belt' carries warm waters from the tropics into the North Atlantic, where they cool and sink and then return southwards in the deep ocean. This circulation pattern is an important ...
Earth Sciences
Mar 20, 2019
143
3664
About 400,000 years ago, large parts of Greenland were ice-free. Scrubby tundra basked in the sun's rays on the island's northwest highlands. Evidence suggests that a forest of spruce trees, buzzing with insects, covered ...
Earth Sciences
Jul 23, 2023
1
161
(PhysOrg.com) -- According to a newly released report in The Proceedings of the National Academy of Sciences, a newly refined method of radiocarbon dating has found that Neanderthals died off much earlier than originally ...
Radioactive carbon released into the atmosphere from 20th-century nuclear bomb tests has reached the deepest parts of the ocean, new research finds.
Earth Sciences
May 8, 2019
6
846
University of Utah researchers developed a new weapon to fight poachers who kill elephants, hippos, rhinos and other wildlife. By measuring radioactive carbon-14 deposited in tusks and teeth by open-air nuclear bomb tests, ...
Analytical Chemistry
Jul 1, 2013
0
2
Two decades of atomic bomb testing in the atmosphere are yielding an unexpected bonus for consumers, scientists reported here today at the 239th National Meeting of the American Chemical Society (ACS). It's a new test to ...
Analytical Chemistry
Mar 22, 2010
4
0
The Fukushima Daiichi nuclear disaster spread significant radioactive contamination over more than 3500 square miles of the Japanese mainland in the spring of 2011. Now several recently published studies of Chernobyl, directed ...
Environment
Aug 21, 2013
21
0
(Phys.org)—If a nuclear device were to unexpectedly detonate anywhere on Earth, the ensuing effort to find out who made the weapon probably would be led by aircraft rapidly collecting airborne radioactive particles for ...
Engineering
Jan 10, 2013
0
0
