(PhysOrg.com) -- Fifty million years ago, the North and South Poles were ice-free and crocodiles roamed the Arctic. Since then, a long-term decrease in the amount of CO2 in the atmosphere has cooled the Earth. Researchers ...
Earth Sciences
Jul 1, 2009
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(PhysOrg.com) -- The bombardment of Earth nearly 4 billion years ago by asteroids as large as Kansas would not have had the firepower to extinguish potential early life on the planet and may even have given it a boost, says ...
Earth Sciences
May 20, 2009
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Although long thought to be devoid of life, the bottom of the deep ocean is now known to harbor entire ecosystems teeming with microbes. Scientists have recently documented that oxygen is disappearing from seawater circulating ...
Earth Sciences
Sep 27, 2013
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The origin of life on Earth is still a hotly-debated topic. There are many different theories on how life was kick-started, as well as various experiments underway attempting to understand the processes involved. For example, ...
Space Exploration
Sep 25, 2013
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Hopes of finding life on Mars suffered a setback after new findings from NASA's Curiosity rover detected only trace amounts of methane gas in the Red Planet's atmosphere, a study said Thursday.
Space Exploration
Sep 19, 2013
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Habitable conditions on Earth will be possible for at least another 1.75 billion years – according to astrobiologists at the University of East Anglia.
Astronomy
Sep 18, 2013
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By collecting water samples up to six kilometres below the surface of the Southern Ocean, UNSW researchers have shown for the first time the impact of ocean currents on the distribution and abundance of marine micro-organisms.
Earth Sciences
Sep 18, 2013
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New evidence has emerged which supports the long-debated theory that life on Earth may have started on Mars.
Space Exploration
Aug 28, 2013
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Scientists have pinpointed the lowest temperature at which simple life can live and grow.
Cell & Microbiology
Aug 21, 2013
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Observed in the wild, tucked away in museum collections, and even exhibited in zoos around the world—there is one mysterious creature that has been a victim of mistaken identity for more than 100 years. A team of Smithsonian ...
Plants & Animals
Aug 15, 2013
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