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
Volcanic eruptions and human-caused changes to the atmosphere strongly influence the rate at which the ocean absorbs carbon dioxide, says a new study. The ocean is so sensitive to changes such as declining greenhouse gas ...
Earth Sciences
Jun 3, 2020
0
129
Nitrogen makes up approximately 78% of the air we breathe. But scientists have never fully understood how it came to be present in the atmospheres around Earth and other planets.
Earth Sciences
Apr 21, 2020
0
22
Philippine authorities on Sunday lowered the alert level at Taal Volcano, two weeks after it began spewing ash, steam and rocks, a move that will allow many of the more than 376,000 displaced villagers to return home.
Environment
Jan 26, 2020
0
17
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
Just like a teenager wanting to be older, volcanoes can lie about their age, or at least about their activities. For kids, it might be little white lies, but volcanoes can tell big lies with big consequences.
Earth Sciences
Oct 5, 2018
0
6
The chemical composition of gases emitted from volcanoes—which are used to monitor changes in volcanic activity—can change depending on the size of gas bubbles rising to the surface, and relate to the way in which they ...
Earth Sciences
Aug 6, 2018
0
71
Kilauea volcano on Hawaii's Big Island has had it all over the past three weeks: molten rock shooting toward the sky, lava oozing from the ground and ash clouds rising miles into the air.
Environment
May 27, 2018
0
23
Scientists have shown for the first time that volcanoes emit distinctive pulses of gas a few hours before erupting, which could lead to real-time forecasting of dangerous volcanic eruptions that are difficult to predict, ...
Earth Sciences
Jan 18, 2018
0
16
It's more than three weeks since the alert level on Bali's Mount Agung was raised to its highest level. An eruption was expected imminently and thousands of people were evacuated, but the volcano has still not erupted.
Earth Sciences
Oct 19, 2017
0
42
