Microbial life on Mars: Could saltwater make it possible?

(PhysOrg.com) -- How common are droplets of saltwater on Mars? Could microbial life survive and reproduce in them? A new million-dollar NASA project led by the University of Michigan aims to answer those questions.

How long is a day on Mars?

Mars represents something of a conundrum for scientists. In many respects, it is significantly different from Earth. It's cold, it's dry, there is little atmosphere or precipitation to speak of, and nothing grows there. ...

Amazon carbon sink threatened by drought

The Amazon is surprisingly sensitive to drought, according to new research conducted throughout the world's largest tropical forest. The 30-year study, published today in Science, provides the first solid evidence that drought ...

Human influence detected in changing seasons

For the first time, scientists from Lawrence Livermore National Laboratory (LLNL) and five other organizations have shown that human influences significantly impact the size of the seasonal cycle of temperature in the lowest ...

Uranus' "sprightly" moon Ariel

The outer Solar System has enough mysteries and potential discoveries to keep scientists busy for decades. Case in point, Uranus and it's system of moons. Since the beginning of the Space Age, only one space probe has ever ...

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