Negative feedback
Elie Dolgin • April 2, 2014
Schizophrenia debilitates not just by psychosis but by depriving people of the ability to feel pleasure.
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As humans return to the Moon, researchers are trying to understand—and thwart—the biological toll of deep-space radiation.
Animals that researchers call “supersucklers” come back for their mother’s milk even after they can hunt, mate and fend for themselves.