(PhysOrg.com) -- Scientists widely accept that around 2.4 billion years ago, the Earth's atmosphere underwent a dramatic change when oxygen levels rose sharply. Called the "Great Oxidation Event" (GOE), the oxygen spike marks ...
Earth Sciences
Oct 29, 2009
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Fossil land snail shells found in ancient soils on the subtropical eastern Canary Islands show that the Spanish archipelago off the northwest coast of Africa has become progressively drier over the past 50,000 years.
Earth Sciences
Oct 27, 2009
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New research suggests that there is plenty of oxygen available in the subsurface ocean of Europa to support oxygen-based metabolic processes for life similar to that on Earth. In fact, there may be enough oxygen to support ...
Earth Sciences
Oct 16, 2009
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Oxygen deficiency in the Baltic Sea has never been greater than it is now. But it is not an effect of climate change but rather of increased inputs of nutrients and fertilisers. This is the finding of researchers at the University ...
Earth Sciences
Oct 13, 2009
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Everybody talks about CO2 and other greenhouse gases as causes of global warming and the large climate changes we are currently experiencing. But what about the atmospheric and oceanic oxygen content? Which role does oxygen ...
Earth Sciences
Sep 10, 2009
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(PhysOrg.com) -- Analysis of a rock type found only in the world's oldest oceans has shed new light on how large animals first got a foothold on the Earth.
Earth Sciences
Sep 9, 2009
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(PhysOrg.com) -- One major threat of planetary warming is the melting of the great polar ice sheets, and the resulting rise in global sea level. Particularly worrisome to researchers is the fragility of the West Antarctic ...
Earth Sciences
Aug 28, 2009
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(PhysOrg.com) -- Bacteria know that they are too small to make an impact individually. So they wait, they multiply, and then they engage in behaviors that are only successful when all cells participate in unison. There are ...
Condensed Matter
Jul 14, 2009
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Later this week, researchers at Stevens Institute of Technology will equip the sloop Clearwater with instrumentation that will provide real-time transmission of position, time, surface water temperature, salinity, and dissolved ...
Environment
Jun 23, 2009
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In Washington state, oysters in some areas haven't reproduced for four years, and preliminary evidence suggests that the increasing acidity of the ocean could be the cause. In the Gulf of Mexico, falling oxygen levels in ...
Earth Sciences
Jun 10, 2009
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