The impact of an asteroid or comet is acknowledged as the principal cause of the mass extinction that killed off most dinosaurs and about three-quarters of the planet's plant and animal species 66 million years ago.
Earth Sciences
Dec 16, 2019
2
3416
(PhysOrg.com) -- Nuclear fission, or the splitting of a heavy nucleus, usually results in symmetrical fragments of the same mass. Physicists attribute the few known examples of fission that is asymmetric to the formation ...
Massive volcanic events in Earth's history that released large amounts of carbon into the atmosphere frequently correlate with periods of severe environmental change and mass extinctions. A new method to estimate how much ...
Earth Sciences
Feb 29, 2024
0
177
A new study published in Nature Geoscience carried out by Ca' Foscari University of Venice, in collaboration with the Institute of Polar Sciences of the National Research Council and other international partners, shows that ...
Earth Sciences
May 10, 2023
0
26
Small-scale gold mining in the Peruvian Amazon poses a health hazard not only to the miners and communities near where mercury is used to extract gold from ore, but also to downstream communities hundreds of kilometers away ...
Environment
May 28, 2020
3
171
Scientists from Duke University have developed a model that can predict the amount of mercury being released into a local ecosystem by deforestation and small-scale gold mining.
Environment
Dec 12, 2019
0
46
Marine fog brings more than cooler temperatures to coastal areas. Researchers at UC Santa Cruz have discovered elevated levels of mercury in mountain lions, the latest indication that the neurotoxin is being carried in fog, ...
Environment
Nov 26, 2019
1
4923
European and Japanese scientists Thursday proudly unveiled the BepiColombo spacecraft ahead of its seven-year journey to Mercury, to explore one of the Solar System's most enigmatic planets.
Space Exploration
Jul 6, 2017
1
60
Despite ongoing global pollution, researchers have discovered that levels of mercury in seabirds off the coast of B.C. have remained relatively stable over the past 50 years. Surprisingly, mercury in seabirds is now actually ...
Environment
Dec 16, 2016
0
98
An analysis of long-term trends in the amount of mercury in rainfall and other forms of precipitation in North America found recent increases at many sites, mostly in the center of the continent. At other sites, including ...
Environment
Jan 27, 2016
0
214
