Where did the Earth's oxygen come from? New study hints at an unexpected source
The amount of oxygen in the Earth's atmosphere makes it a habitable planet.
Earth Sciences
Nov 29, 2022
1
252
Page 5 - News tagged with atmospheric oxygen
Variations in atmospheric oxygen levels shaped Earth's climate through the ages
Variations in the amount of oxygen in Earth's atmosphere significantly altered global climate throughout the planet's history. Efforts to reconstruct past climates must include this previously overlooked factor, a new University ...
Earth Sciences
Jun 11, 2015
17
1311
Research says Mars had oxygen-rich atmosphere 4000 million years ago
Differences between Martian meteorites and rocks examined by a NASA rover can be explained if Mars had an oxygen-rich atmosphere 4000 million years ago—well before the rise of atmospheric oxygen on Earth 2500 million years ...
Space Exploration
Jun 19, 2013
18
0
It takes two—a two-atom catalyst, that is—to make oxygen from water
The search for sustainable approaches to generating new fuels has brought scientists back to one of the most abundant materials on Earth—reddish iron oxide in the form of hematite, also known as rust.
Materials Science
Oct 21, 2019
1
587
Cassini finds oxygen-carbon dioxide atmosphere on Saturn's moon Rhea
(PhysOrg.com) -- In a flyby past Rhea, Saturn's second-largest moon, NASA's spacecraft Cassini has revealed the presence of a thin atmosphere of 70 percent oxygen and 30 percent carbon dioxide, which is apparently sustained ...
Ancient atmospheric oxygen sleuthing with ocean chromium
Found in jewelry, car parts, pigments, and industrial chemical reactions, the metal chromium and its compounds are often employed for their color, finish, and anti-corrosive and catalytic properties. Currently, geoscientists ...
Earth Sciences
Apr 6, 2021
0
704
Theory on origin of animals challenged: Earliest animal life may have required little oxygen
One of science's strongest dogmas is that complex life on Earth could only evolve when oxygen levels in the atmosphere rose to close to modern levels. But now studies of a small sea sponge fished out of a Danish fjord shows ...
Earth Sciences
Feb 17, 2014
24
0
Insects took off when they evolved wings
The evolution of wings not only allowed ancient insects to become the first creatures on Earth to take to the skies, but also propelled their rise to become one of nature's great success stories, according to a new study.
Archaeology
Jan 23, 2018
0
160
Ancient rocks show high oxygen levels on Earth two billion years ago
Earth may have been far more oxygen-rich early in its history than previously thought, setting the stage for the evolution of complex life, according to new research by scientists at the University of Alberta and the University ...
Earth Sciences
May 12, 2020
2
3034
Link identified between continental breakup, volcanic carbon emissions and evolution
Researchers have found that the formation and breakup of supercontinents over hundreds of millions of years controls volcanic carbon emissions. The results, reported in the journal Science, could lead to a reinterpretation ...
Earth Sciences
Jul 21, 2017
22
468
