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
Oxygen has provided a breath of fresh air to the study of the Earth's evolution some 400-plus million years ago.
Earth Sciences
Nov 20, 2017
0
467
Oxygen levels in the Earth's atmosphere are likely to have "fluctuated wildly" 1 billion years ago, creating conditions that could have accelerated the development of early animal life, according to new research.
Evolution
Oct 14, 2022
1
179
Dramatic drops in oceanic oxygen, which cause mass extinctions of sea life, come to a natural end - but it takes about a million years.
Earth Sciences
May 12, 2017
0
346
Tiny meteorites no larger than grains of sand hold new clues about the atmosphere on ancient Earth, according to scientists.
Earth Sciences
Jan 30, 2020
2
794
Why do some science instruments detect the gas on the Red Planet while others don't?
Planetary Sciences
Jun 30, 2021
2
400
.jpg)
(Phys.org)—Multicellularity in cyanobacteria originated before 2.4 billion years ago and is associated with the accumulation of atmospheric oxygen, subsequently enabling the evolution of aerobic life, as we know it today, ...
Earth Sciences
Jan 16, 2013
2
1
The evolution of the first animals may have oxygenated the earth's oceans – contrary to the traditional view that a rise in oxygen triggered their development.
Earth Sciences
Mar 9, 2014
3
1
Researchers in the Department of Earth Sciences at Syracuse University have confirmed that rising oceanic and atmospheric oxygen levels co-evolved with marine life hundreds of millions of years ago.
Earth Sciences
May 31, 2018
0
208
The quest to discover what drove one of the most important evolutionary events in the history of life on Earth has taken a new, fascinating twist.
Earth Sciences
Jun 19, 2019
1
46
