News tagged with atmosphere

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Air pollution in Antarctica

While Antarctica remains one of the cleanest places in the world, increasingly large amounts of natural and man-made atmospheric pollutants are finding their way to the frozen continent. Pollutants enter ...

Dec 05, 2014
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Land use looms as large factor in global warming

For the world's deteriorating environment, don't blame burning fossil fuels exclusively. Land use and land cover changes contribute about 40 percent to "radiative forcing," a key underlying factor in global warming, according ...

Dec 04, 2014
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What is the upper limit for massive stars?

Yesterday I mentioned that hypernovae (super-supernovae) are the result of the explosion of a star that's about as massive as a star can be (about 150-200 solar masses). But how exactly do we know that t ...

Oct 07, 2014
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