World's first animals caused global warming
The evolution of Earth's first animals more than 500 million years ago caused global warming, new research shows.
Earth Sciences
Jul 2, 2018
8
981
News tagged with global ocean
The Greenland Ice Sheet is close to a melting point of no return, says new study
The Greenland Ice Sheet covers 1.7 million square kilometers (660,200 square miles) in the Arctic. If it melts entirely, global sea level would rise about 7 meters (23 feet), but scientists aren't sure how quickly the ice ...
Earth Sciences
Mar 27, 2023
41
737
Underwater snow gives clues about Europa's icy shell
Below Europa's thick icy crust is a massive, global ocean where the snow floats upwards onto inverted ice peaks and submerged ravines. The bizarre underwater snow is known to occur below ice shelves on Earth, but a new study ...
Astrobiology
Aug 15, 2022
0
709
Video: The krill factor in ocean mixing
Scientists have long chalked up ocean mixing of salt, heat, nutrients and gases, such as oxygen and carbon dioxide, to wind and tides. New research is investigating another possible contributor: krill. Mixing ocean water ...
Earth Sciences
Feb 20, 2019
1
5
Oxygen depletion in ancient oceans caused major mass extinction
Late in the prehistoric Silurian Period, around 420 million years ago, a devastating mass extinction event wiped 23 percent of all marine animals from the face of the planet.
Earth Sciences
Aug 30, 2019
26
1132
Geoscientists discover an overlooked source for Earth's water
Where did Earth's global ocean come from? A team of Arizona State University geoscientists led by Peter Buseck, Regents' Professor in ASU's School of Earth and Space Exploration (SESE) and School of Molecular Sciences, has ...
Earth Sciences
Nov 7, 2018
12
847
NASA satellites detect pothole on road to higher seas
Like mercury in a thermometer, ocean waters expand as they warm. This, along with melting glaciers and ice sheets in Greenland and Antarctica, drives sea levels higher over the long term. For the past 18 years, the U.S./French ...
Earth Sciences
Aug 24, 2011
42
0
Antarctic sea ice is key to triggering ice ages, study finds
We've known for years that Earth's climate is like a giant Rube Goldberg machine: Pull one lever, and a massive chain of events starts into motion. Yet many of the steps that drive these changes have remained shrouded in ...
Earth Sciences
Oct 29, 2019
14
1276
Sea level rise quickens as Greenland ice sheet sheds record amount
Greenland's massive ice sheet saw a record net loss of 532 billion tonnes last year, raising red flags about accelerating sea level rise, according to new findings.
Earth Sciences
Aug 21, 2020
26
3543
Stronger evidence for a weaker Atlantic overturning
The Atlantic overturning—one of Earth's most important heat transport systems, pumping warm water northward and cold water southward—is weaker today than any time before in more than 1000 years. Sea surface temperature ...
Earth Sciences
Apr 11, 2018
0
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