Between 2.5 and 4 billion years ago, a time known as the Archean eon, Earth's weather could often be described as cloudy with a chance of asteroid.
Earth Sciences
Oct 21, 2021
1
248
Not long after the dawn of complex animal life, tens of millions of years before the first of the "Big Five" mass extinctions, a rash of die-offs struck the world's oceans. Then, for reasons that scientists have debated for ...
Ecology
Oct 5, 2021
1
1394
Scientists have long debated how much molecular oxygen was in Earth's early atmosphere. About 2.4 billion years ago, there was a rise in oxygen that transformed Earth's atmosphere and biosphere, eventually making life like ...
Earth Sciences
Sep 30, 2021
1
508
Rather than ocean oxygen levels improving as they usually do this time of year, hypoxia off the Pacific Northwest coast is as bad as it's been at any point in 2021, according to collaborative research by Oregon State University, ...
Environment
Sep 9, 2021
0
44
A new analysis of 2.5-billion-year-old rocks from Australia finds that volcanic eruptions may have stimulated population surges of marine microorganisms, creating the first puffs of oxygen into the atmosphere. This would ...
Earth Sciences
Aug 26, 2021
0
1128
Planets which are tilted on their axis, like Earth, are more capable of evolving complex life. This finding will help scientists refine the search for more advanced life on exoplanets. This NASA-funded research is presented ...
Planetary Sciences
Jul 8, 2021
0
7383
Why do some science instruments detect the gas on the Red Planet while others don't?
Planetary Sciences
Jun 30, 2021
2
400
Scientists have long thought that there was a direct connection between the rise in atmospheric oxygen, which started with the Great Oxygenation Event 2.5 billion years ago, and the rise of large, complex multicellular organisms.
Plants & Animals
May 17, 2021
1
30
While climate change is regarded as one of the world's most pressing issues, questions remain about how quickly the globe is warming.
Earth Sciences
Apr 27, 2021
0
5
Violent continental collisions and volcanic eruptions are not things normally associated with comfortable conditions for life. However, a new study, involving University of Tennessee, Knoxville, Associate Professor of Microbiology ...
Earth Sciences
Apr 26, 2021
1
188
