(PhysOrg.com) -- Geologists may have uncovered the answer to an age-old question - an ice-age-old question, that is. It appears that Earth's earliest ice ages may have been due to the rise of oxygen in Earth's atmosphere, ...
Earth Sciences
May 7, 2009
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(PhysOrg.com) -- Sedimentary rocks created more than 2.4 billion years ago sometimes have an unusual sulfur isotope composition thought to be caused by the action of ultra violet light on volcanically produced sulfur dioxide ...
Earth Sciences
Apr 16, 2009
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New international research led by the University of St Andrews reveals historical high latitude volcanic eruptions caused dramatic, but short-lived climate cooling.
Earth Sciences
Nov 7, 2023
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Using a newly developed technique, researchers have ruled out a potential source of ancient dissolved organic matter (DOM) in the world's oceans.
Earth Sciences
Oct 14, 2022
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University of Adelaide scientists have developed a new simple, inexpensive and fast method to analyze sulfur isotopes, which can be used to help investigate chemical changes in environments such as oceans, and freshwater ...
Earth Sciences
Jul 29, 2021
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Volcanic rock samples collected during NASA's Apollo missions bear the isotopic signature of key events in the early evolution of the Moon, a new analysis found. Those events include the formation of the Moon's iron core, ...
Space Exploration
Feb 24, 2021
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Three and a half billion years ago, Earth hosted life, but was it barely surviving, or thriving? A new study carried out by a multi-institutional team with leadership including the Earth-Life Science Institute (ELSI) of Tokyo ...
Earth Sciences
Feb 8, 2019
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Scientists have long thought oxygen appeared in Earth's lower atmosphere 2.7 billion years ago, making life as we know it possible. A Rice University researcher has added evidence to support that number.
Earth Sciences
Jul 23, 2018
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It is thought that animal life first arose during the Ediacaran Period, between 635 and 541 million years ago, but these organisms bore little resemblance to the animals we know today. That's led some scientists to believe ...
Earth Sciences
Mar 13, 2017
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The ocean is often depicted as teeming with life, from crustaceans and fish to whales and other mammals, but in fact large swaths of it are virtual deserts, populated only by bacteria and a handful of particularly hardy species.
Earth Sciences
Oct 2, 2014
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