Archive: 20/10/2008

Pesticide concentrations decreasing

The widespread use of pesticides across the United States has been in practice for decades, with little knowledge of the long-term effects on the nation's groundwater.

dateOct 20, 2008 in Environment
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Engineering nanoparticles for maximum strength

Because they are riddled with defects, bulk crystalline materials never achieve their ideal strength; nanocrystals, on the other hand, are so small there's no room for defects. Yet while nanocrystalline materials may approach ...

dateOct 20, 2008 in Nanomaterials
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Crossing 'a bridge to nowhere'

Despite thousands of years of research, astronomers know next to nothing about how the universe is structured. One strong and accepted theory is that large galaxies are clustered together on structures similar to giant soap ...

dateOct 20, 2008 in Astronomy
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Race for better superconductors heats up

Scientists have discovered a new family of superconductors -- materials that carry electricity more efficiently than copper and other metals -- whose properties rekindle enthusiasm about the possibility that these exotic ...

dateOct 20, 2008 in
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