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Reseachers have started to examine the genetic traces of the movement of some six million African-Americans from the south to the north and west between 1910 and 1970.
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A housefly relative appears to be key to the reproductive success of a hardy tundra shrub. But the insect is threatened by the warming climate. Christopher Intagliata reports.
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A protein from microscopic creatures called tardigrades keeps their DNA protected—and could someday shield humans from radiation.
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When the sun, moon and Earth are aligned, high tidal stress may increase the chances that an earthquake will grow bigger than it otherwise might have been.
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An ant walking in the desert can gauge distance by footsteps and the sun's position, but an ant being carried can estimate distance by visual information perceived as it passed by.
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