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Birds are yet another group that is at risk

A Final Word MBTI has severe limitations when it comes to scientific evidence, and the American Psychological Association does not endorse it for clinical, employment, or research use

Scientists think serotonin defects could contribute to SIDS by affecting an infant's ability to autoresuscitate

Methamphetamine triggers a massive dopamine release -- far exceeding natural rewards -- and simultaneously damages the dopamine-producing neurons responsible for baseline pleasure

Start quiz The Guardian newspaper reports a 10-year study which shows that the smoking rate fell among working-class women aged 18-25 while rising among middle-class women of the same age