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biology

Hunting for High Life: What Lives in Earth’s Stratosphere?

November 15, 2012

Want to stay on top of all the space news? Follow @universetoday on Twitter The Moon photographed through the layers of the atmosphere from the ISS in December 2003 (NASA/JSC) What lives at the edge of space? Other than high-flying jet aircraft pilots (and the occasional daredevil skydiver) you wouldn’t expect to find many living [...]

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When Everything On Earth Died

June 2, 2012

Hey, remember that one time when 90% of all life on Earth got wiped out? I don’t either. But it’s a good thing it happened because otherwise none of us would be here to… not remember it. Still, the end-Permian Extinction — a.k.a. the Great Dying — was very much a real crisis for life on [...]

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Is Earth Alive? Scientists Seek Sulfur For An Answer

May 16, 2012

Researchers at the University of Maryland have discovered a way to identify and track sulfuric compounds in Earth’s marine environment, opening a path to either refute or support a decades-old hypothesis that our planet can be compared to a singular, self-regulating, living organism — a.k.a. the Gaia theory. Remove this ad

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Is This Proof of Life on Mars?

April 12, 2012

The Curiosity rover is currently on its way to Mars, scheduled to make a dramatic landing within Gale Crater in mid-August and begin its hunt for the geologic signatures of a watery, life-friendly past. Solid evidence that large volumes of water existed on Mars at some point would be a major step forward in the [...]

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Replication of Arsenic Life Experiment Not Successful So Far

August 10, 2011

One of the most vocal and ardent critics of the so-called ‘arsenic life’ experiment which was published in December 2010 was biologist Rosie Redfield from the University of British Columbia in Vancouver. The science paper by NASA astrobiologist Felisa Wolfe-Simon and her team reported that a type of bacteria in Mono Lake in California can [...]

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