Digging up the 'Spanish Vikings'

The fearsome reputation of the Vikings has made them the subject of countless exhibitions, books and films - however, surprisingly little is known about their more southerly exploits in Spain.

16 hours ago
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The hot blue stars of Messier 47

Messier 47 is located approximately 1600 light-years from Earth, in the constellation of Puppis (the poop deck of the mythological ship Argo). It was first noticed some time before 1654 by Italian astronomer ...

Dec 17, 2014
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Obama bars oil, gas drilling in Alaska haven

President Barack Obama declared Alaska's ecologically rich Bristol Bay off-limits for oil and gas exploration on Tuesday, saying the move was necessary to safeguard the region's fishing and tourism industries.

Dec 17, 2014
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Stunning zinc fireworks when egg meets sperm

Sparks literally fly when a sperm and an egg hit it off. The fertilized mammalian egg releases from its surface billions of zinc atoms in "zinc sparks," one wave after another, a Northwestern University-led ...

Dec 15, 2014
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