Cosmonauts Outside Station for Second Spacewalk

Two International Space Station cosmonauts began a spacewalk of a little over five hours from the Pirs docking compartment airlock at 10:23 a.m. EDT Wednesday. They will install a section of Ethernet cable on the Zarya module, ...

Nanomedicine opens the way for nerve cell regeneration

The ability to regenerate nerve cells in the body could reduce the effects of trauma and disease in a dramatic way. In two presentations at the NSTI Nanotech 2007 Conference, researchers describe the use of nanotechnology ...

Dirty snow may warm Arctic as much as greenhouse gases

The global warming debate has focused on carbon dioxide emissions, but scientists at UC Irvine have determined that a lesser-known mechanism -- dirty snow -- can explain one-third or more of the Arctic warming primarily attributed ...

Researchers catch motion of a single electron on video

To observe the motion of an electron – an elementary particle with a mass that is one billionth of a billionth of a billionth of a gram – has been considered to be impossible. So when two Brown University physicists showed ...

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