Archive: 12/11/2013

The rise and fall of oxygen

How long has Earth's atmosphere included oxygen? A recent paper suggests low levels of oxygen appeared in the atmosphere approximately 2.95 billion years ago. That's about 550 million years earlier than p ...

Dec 11, 2013
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New system makes the VLA "Two telescopes in one"

The Karl G. Jansky Very Large Array (VLA) will get a new system allowing it to continuously monitor the sky to study the Earth's ionosphere and detect short bursts of radio emission from astronomical objects. ...

Dec 11, 2013
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Video: The anatomy of a raindrop

When asked to picture the shape of raindrops, many of us will imagine water looking like tears that fall from our eyes, or the stretched out drip from a leaky faucet. This popular misconception is often reinforced in weather ...

Dec 11, 2013
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Men's 'overwork' widens gender gap in wages

(Phys.org) —By now, social scientists once predicted, the gender gap in wages should have been as thin as a Roosevelt dime. More and more highly educated women were entering and staying in the workforce – many in lucrative ...

Dec 11, 2013
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