The impact of an asteroid or comet is acknowledged as the principal cause of the mass extinction that killed off most dinosaurs and about three-quarters of the planet's plant and animal species 66 million years ago.
Earth Sciences
Dec 16, 2019
2
3416
Most of the concerns about climate change have focused on the amount of greenhouse gases that have been released into the atmosphere.
Earth Sciences
Oct 24, 2014
219
1
A team of researchers in the U.S. claims that climate models used to predict the rise in CO2 concentrations in the atmosphere are approximately 17 percent too high because they incorrectly approximate how much CO2 plants ...
The level of carbon dioxide in the atmosphere increased at a record pace last year, US government scientists reported, raising new concern about one of the top greenhouse gases and the effects of global warming.
Environment
Mar 10, 2016
4
576
In a marriage of quantum science and solid-state physics, researchers at the National Institute of Standards and Technology (NIST) have used magnetic fields to confine groups of electrons to a series of concentric rings within ...
General Physics
Aug 23, 2018
2
455
Mercury concentrations in Hawaiian yellowfin tuna are increasing at a rate of 3.8 percent or more per year, according to a new University of Michigan-led study that suggests rising atmospheric levels of the toxin are to blame.
Environment
Feb 2, 2015
5
379
A fresh look at some old rocks has solved a crucial mystery of the last Ice Age, yielding an important new finding that connects to the global retreat of glaciers caused by climate change today, according to a new study by ...
Earth Sciences
Aug 21, 2015
27
294
For the development of animals, nothing—with the exception of DNA—may be more important than oxygen in the atmosphere.
Earth Sciences
Jan 2, 2017
13
718
The expansion of offshore wind farms in the North Sea is making progress. But the consequences for the marine environment they are built in have not yet been fully researched. Scientists at the Helmholtz-Zentrum Hereon have ...
Environment
Nov 28, 2022
2
597
Oxygen didn't catalyze the swift blossoming of Earth's first multicellular organisms. The results of a new study defy a 70-year-old assumption about what caused an explosion of oceanic fauna hundreds of millions of years ...
Evolution
Jul 18, 2023
1
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