Archive: 3/12/2007

Analog of cosmological particle creation

“In cosmology there’s this quantum effect,” Ralf Schützhold tells “In the universe, there is a ground state, where it is empty. But if the universe starts to expand or contract, the vacuum is distorted, ...

dateDec 03, 2007 in General Physics feature
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Proposed federal rule threatens 2 decades of established law

The Society for American Archaeology (SAA) has condemned a proposed rule by the U.S. Department of Interior that would put in jeopardy the highly productive compromise that was reached when the Native American Graves Protection ...

dateDec 03, 2007 in
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Team sculpts 3D particles with light

MIT engineers have used ultraviolet light to sculpt three-dimensional microparticles that could have many applications in medical diagnostics and tissue engineering. For example, they could be designed to act as probes to ...

dateDec 03, 2007 in
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Climate change predicted to drive trees northward

The most extensive and detailed study to date of 130 North American tree species concludes that expected climate change this century could shift their ranges northward by hundreds of kilometers and shrink the ranges by more ...

dateDec 03, 2007 in Environment
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