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
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
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
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
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
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
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
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
A topic of considerable interest to paleontologists is how dinosaur-dominated ecosystems were structured, how dinosaurs and co-occurring animals were distributed across the landscape, how they interacted with one another, ...
Earth Sciences
Mar 18, 2020
0
663
In Australia, the onset of human occupation (about 65,000 years?) and dispersion across the continent are the subjects of intense debate and are critical to understanding global human migration routes. A lack of ceramic artifacts ...
Earth Sciences
Feb 10, 2020
0
32
