News tagged with optic nerve

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Birds 'See' Earth's Magnetic Field

When birds migrate over long distances -- sometimes thousands of miles -- they usually end up in exactly the same place year after year. Such accurate feats of navigation, accomplished by millions of birds ...

Nov 16, 2009
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Orbital samples with sight-saving potential

Those who travel to space are rewarded with a beautiful sight - planet Earth. But the effects of space travel on the human sense of sight aren't so beautiful. More than 30 percent of astronauts who returned ...

Dec 11, 2013
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