The first humans who ventured into North America crossed a land bridge from Asia that is now submerged beneath the Bering Sea, and then may have traveled down the West Coast to occupy sites in Oregon and elsewhere as long ...
Archaeology
Aug 27, 2014
8
0
Analyses of the longest continental sediment core ever collected in the Arctic, recently completed by an international team led by Julie Brigham-Grette of the University of Massachusetts Amherst, provide "absolutely new knowledge" ...
Earth Sciences
May 9, 2013
14
0
A decline in atmospheric carbon dioxide (CO2) levels led to a fundamental shift in the behaviour of the Earth's climate system around one million years ago, according to new research led by the University of Southampton.
Earth Sciences
Nov 27, 2017
3
169
Totten Glacier, the largest glacier in East Antarctica, is being melted from below by warm water that reaches the ice when winds over the ocean are strong—a cause for concern because the glacier holds more than 11 feet ...
Earth Sciences
Nov 1, 2017
1
122
Scientists at the British Antarctic Survey have been working with a host of international collaborators to present the most detailed map yet of Antarctica's landmass. Bedmap2 reveals a landscape of mountain ranges and plains ...
Earth Sciences
Mar 8, 2013
0
0
Ice shelves, massive floating bodies of ice, are well-known for their buffering effect on land-based ice sheets as they slow their flow towards the sea. This buffering effect plays an important role in moderating global sea ...
Earth Sciences
May 27, 2020
0
1
A group of North American Pleistocene horses was previously identified as different species. Now, mitochondrial and partial nuclear genomic studies support the idea that there is only one species, which belongs to a new genus.
Archaeology
Feb 14, 2018
0
11
Projecting when and how fast the West Antarctic Ice Sheet will lose mass due to current and future global ocean warming—and the likely impact on sea level rise and coastal communities—is a priority for climate science.
Earth Sciences
Nov 14, 2023
0
4
The Antarctic Circumpolar Current is the planet's most powerful and arguably most important. It is the only one to flow clear around the globe without getting diverted by any landmass, sending up to 150 times the flow of ...
Earth Sciences
May 16, 2019
0
4
Cyclic changes in the tilt of the Earth's axis and the eccentricity of its orbit have left their mark on hills deep under the ocean, a study published in Science has found.
Earth Sciences
Feb 10, 2015
0
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