News
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AnimalsIn drought, zebra finches wring water from their own fat
A zebra finch with no water or food can keep itself hydrated by metabolizing body fat.
By Susan Milius -
NeuroscienceNew Alzheimer’s drug shows promise in small trial
A much-anticipated Alzheimer’s drug shows promise in a new trial, but experts temper hope with caution.
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HumansBrain’s blood appetite grew faster than its size
Over evolutionary time, the energy demands of hominid brains increased faster than their volume, a new study finds.
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AstronomyRadio signal probably not from extraterrestrials
A possible radio signal from extraterrestrials probably originated a lot closer to home.