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Climate

Global warming hiatus tied to cooler temps in Pacific

Average air temperatures' rise has paused, but not stopped, because of normal variation in ocean temperatures.

Life

A fight between gut parasites means a win for people

Worms and Giardia can antagonize each other in the human intestinal tract, study of people in the Amazon suggests.

Humans

Babies learn words before birth

Brain responses suggest infants can distinguish distinct words from altered versions that they learned in the womb.

Psychology

Behavioral research may overstate results

'Soft' sciences inflate support for what scientists expected to find, data check suggests.