About 183 million years ago, volcanic activity in modern South Africa unleashed an estimated 20,500 gigatons of carbon dioxide (CO2) into the ocean–atmosphere system over a period of 300 to 500 thousand years. Known as ...
Earth Sciences
Jun 25, 2024
1
158
The chemical secrets of a concrete Roman breakwater that has spent the last 2,000 years submerged in the Mediterranean Sea have been uncovered by an international team of researchers led by Paulo Monteiro of the U.S. Department ...
Materials Science
Jun 4, 2013
28
5
A volcano that spewed glowing red lava near Iceland's capital Reykjavik after awakening for the first time in 900 years appeared to be subsiding on Saturday, posing no danger to people, experts said.
Environment
Mar 20, 2021
3
314
Scientists have ruled out the possibility that methane is delivered to Mars by meteorites, raising fresh hopes that the gas might be generated by life on the red planet, in research published tomorrow in Earth and Planetary ...
Space Exploration
Dec 8, 2009
11
0
Oxygen first accumulated in the Earth's atmosphere about 2.4 billion years ago, during the Great Oxidation Event. A long-standing puzzle has been that geologic clues suggest early bacteria were photosynthesizing and pumping ...
Earth Sciences
Jun 9, 2020
3
524
The massive underwater volcanic eruption in Tonga has brought heated discussions concerning how it may affect the global climate.
Environment
Feb 18, 2022
5
221
(PhysOrg.com) -- A team of chemists from the U.S. and France has found compelling evidence of a previously undocumented large volcanic eruption that occurred exactly 200 years ago, in 1809.
Earth Sciences
Oct 29, 2009
9
0
Researchers at the University of Oxford have confirmed that human activity and other external factors are responsible for the rise in global temperature. While this has been the consensus of the scientific community for a ...
Environment
May 22, 2019
16
242
They come with eagle-eyed drones and high-precision instruments. Aided by satellites, they analyze gas emissions and the flows of molten rock. On the ground, they collect everything from the tiniest particles to "lava bombs" ...
Earth Sciences
Dec 2, 2021
1
450
Rain as acidic as undiluted lemon juice may have played a part in killing off plants and organisms around the world during the most severe mass extinction in Earth's history.
Earth Sciences
Nov 22, 2013
5
0
