Microplastics in groundwater (and our drinking water) present unknown risk
Microplastics (plastics
Environment
Oct 26, 2020
0
30
Page 8 - Geological Society of America
Ancient lake contributed to past San Andreas fault ruptures
The San Andreas fault, which runs along the western coast of North America and crosses dense population centers like Los Angeles, California, is one of the most-studied faults in North America because of its significant hazard ...
Earth Sciences
Oct 26, 2020
0
277
Ancient Adelie penguin colony revealed by snowmelt at Cape Irizar, Ross Sea, Antarctica
Researcher Steven Emslie encountered a puzzle at Cape Irizar, a rocky cape located just south of the Drygalski Ice Tongue on the Scott Coast, Ross Sea. He found both ancient and what appeared to be fresh remains of Adelie ...
Archaeology
Sep 28, 2020
0
135
Dust may have controlled ancient human civilization
When early humans began to travel out of Africa and spread into Eurasia over a hundred thousand years ago, a fertile region around the eastern Mediterranean Sea called the Levant served as a critical gateway between northern ...
Earth Sciences
Sep 15, 2020
0
1279
Evolution after Chicxulub asteroid impact: Rapid response of life to end-cretaceous mass
The impact event that formed the Chicxulub crater (Yucatán Peninsula, México) caused the extinction of 75% of species on Earth 66 million years ago, including non-avian dinosaurs. One place that did not experience much ...
Earth Sciences
Jul 14, 2020
1
237
Discovery of ancient super-eruptions indicates the Yellowstone hotspot may be waning
Throughout Earth's long history, volcanic super-eruptions have been some of the most extreme events ever to affect our planet's rugged surface. Surprisingly, even though these explosions eject enormous volumes of material—at ...
Earth Sciences
Jun 3, 2020
2
7378
Study shows today's atmospheric carbon dioxide levels greater than 23 million-year record
A common message in use to convey the seriousness of climate change to the public is: "Carbon dioxide levels are higher today than they have been for the past one million years!" This new study by Brian Schubert (University ...
Earth Sciences
Jun 1, 2020
1
164
Catastrophic outburst floods carved Greenland's 'Grand Canyon'
Buried a mile beneath Greenland's thick ice sheet is a network of canyons so deep and long that the largest of these has been called Greenland's "Grand Canyon." This megacanyon's shape suggests it was carved by running water ...
Earth Sciences
Apr 30, 2020
9
482
Glacier detachments: A new hazard in a warming world?
On the evening of 5 August 2013, a startling event occurred deep in the remote interior of the United States' largest national park. A half-kilometer-long tongue of Alaska's Flat Creek glacier suddenly broke off, unleashing ...
Earth Sciences
Apr 28, 2020
7
638
Sediments may control location, magnitude of megaquakes
The world's most powerful earthquakes strike at subduction zones, areas where enormous amounts of stress build up as one tectonic plate dives beneath another. When suddenly released, this stress can cause devastating "megaquakes" ...
Earth Sciences
Mar 31, 2020
0
171
