(Phys.org) -- An international team of astronomers led by David Pinfield of the University of Hertfordshire has found a brown dwarf that is more than 99% hydrogen and helium. Described as ultra-cool, it has a temperature ...
Astronomy
May 10, 2012
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An analysis of sulfide ore deposits from one of the world's richest base-metal mines confirms that oxygen levels were extremely low on Earth 2.7 billion years ago, but also shows that microbes were actively feeding on sulfate ...
Earth Sciences
Dec 10, 2012
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A first-ever study of air trapped in the deep snowpack of Greenland shows that atmospheric levels of carbon monoxide (CO) in the 1950s were actually slightly higher than what we have today. This is a surprise because current ...
Earth Sciences
Sep 17, 2013
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Astronomers are working hard to understand biosignatures and how they indicate life's presence on an exoplanet. But each planet we encounter is a unique puzzle. When it comes to planetary atmospheres, carbon is a big piece ...
Astrobiology
Sep 29, 2023
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A previously unrecognized player in the process by which gases produced by trees and other plants become aerosols—microscopically small particles in the atmosphere—has been discovered by a research team led by scientists ...
Environment
Aug 6, 2009
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(Phys.org)—Research that sheds new light on the microscopic chemical physics driving one of the most important reaction sequences in atmospheric chemistry is published in Science today by Dr David Glowacki from the University ...
General Physics
Sep 3, 2012
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An international research team led by the University of Colorado Boulder and the University of Helsinki has discovered a surprising new chemical compound in Earth's atmosphere that reacts with sulfur dioxide to form sulfuric ...
Environment
Aug 8, 2012
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(PhysOrg.com) -- A recent study led by Drs. Julia and Alexander Laskin from Pacific Northwest National Laboratory and Prof. Sergey Nizkorodov from the University of California, Irvine revealed atmospheric chemistry processes ...
Analytical Chemistry
Apr 12, 2010
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(PhysOrg.com) -- A visit to your local graveyard can provide not only a history lesson, but a science lesson as well. Historians know that gravestones can reflect the lives of people whose memories are lost in time, and ...
Earth Sciences
Dec 8, 2009
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Measurements of London's atmosphere show the city is releasing more of the potent greenhouse gas methane, primarily from natural gas leaks.
Environment
Feb 17, 2022
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