An unknown culprit has been removing oxygen from our atmosphere for at least 800,000 years, and an analysis of air bubbles preserved in Antarctic ice for up to 1.5 million years has revealed the likely suspect.
Earth Sciences
Dec 20, 2021
0
1861
(Phys.org)—A quartet of researchers at Simon Fraser University in Canada has found evidence that suggests that the reason early humans were able to survive the ice age while the Neanderthal perished is because humans figured ...
When and how humans first settled in the Americas is a subject of considerable controversy. In the 20th century, archaeologists believed that humans reached the North American interior no earlier than around 14,000 years ...
Archaeology
Oct 8, 2023
1
229
Twenty thousand years ago, when humans were still nomadic hunters and gatherers, low concentrations of carbon dioxide in the atmosphere allowed the earth to fall into the grip of an ice age. But despite decades of research, ...
Earth Sciences
Feb 3, 2016
8
1110
An international team of researchers has used computer simulations to show that it was likely a combination of climate change and human hunting that led to the extinction of the woolly mammoth. They have written a paper describing ...
Over the last two and a half million years the Earth has undergone more than 50 major ice ages, each having a profound effect on our planet's climate. But what causes them and how do we predict when the next big ice age will ...
Earth Sciences
Dec 12, 2016
8
198
Over the last 540 million years, the Earth has weathered three major ice ages—periods during which global temperatures plummeted, producing extensive ice sheets and glaciers that have stretched beyond the polar caps.
Earth Sciences
Mar 14, 2019
11
2514
(PhysOrg.com) -- Saudi Arabia is drilling for a resource possibly more precious than oil.
Earth Sciences
Mar 30, 2012
5
0
The first sequencing of ancient genomes extracted from human remains that date back to the Late Upper Palaeolithic period over 13,000 years ago has revealed a previously unknown "fourth strand" of ancient European ancestry.
Archaeology
Nov 16, 2015
0
914
The Southern Ocean played a critical role in the rapid atmospheric carbon dioxide increase during the last deglaciation that took place 20,000 to 10,000 years ago, according to a new report by Boston College geochemist Xingchen ...
Environment
Oct 16, 2020
1
1437
