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Amino acid alphabet soup

All life on Earth relies on a standard set of 20 amino acids to build the proteins that carry out life's essential actions. But did it have to be this way?

dateAug 19, 2011 in Cell & Microbiology
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Scientists seek to corral asteroid for study

Scheming to rearrange the heavens, scientists are busy planning how to pluck, push and park a spinning asteroid between here and the moon. While most of us hope to dodge space rocks, NASA has unveiled an ambitious, $105 million ...

dateMay 13, 2013 in Space Exploration
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To an asteroid, and beyond

The asteroid 1999 RQ36 may not be a household name, but astronomers predict that in less than 200 years, it may make an unforgettable impact. According to radar and optical observations, the space rock, measuring some five ...

dateJul 26, 2011 in Space Exploration
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Russia halts search for meteorite

Russian authorities halted their search Sunday for the meteorite that spectacularly struck the Urals last week, leaving about 1,200 people injured and damaging several thousand buildings.

dateFeb 17, 2013 in Space Exploration
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