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Another Path to
Fusion Power
Because global oil production could peak within the decade,
we need to find alternative energy sources soon. One of the
most attractive is fusion, dynamo of the stars. On Earth, controlled
fusion could provide safe, clean, and virtually inexhaustible
energy. Scientists are studying more
than one path to fusion power. |
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Tiny Tinny Bubbles
Remarkably uniform and versatile, and only a few billionths
of a meter in diameter, hollow
metal nanospheres have potential applications ranging from
drug delivery to nanoelectronics to nanoscale catalysts, confined
like the yolks inside eggs. How hollow nanocrystals manage to
virtually mass-produce themselves involves a surprising property
of solids known as the Kirkendall effect. |
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Tracking Parkinson's with PET
Researchers have learned how to use positron emission tomography,
better known as the PET scan, to pinpoint
the dopamine-producing regions of the healthy brain. They
plan to use the same technique to track the effectiveness of
a new gene therapy that could help people with severe Parkinson's
disease. |
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