From increased chance of death from sleeping too little to pre-alarm techniques for waking people up, there's a lot about ...

For a long time, scientists judged animal intelligence by how closely it resembled human behavior. That left a lot unnoticed.

Having a roommate means less privacy.

Find Body Parts Latest News, Videos & Pictures on Body Parts and see latest updates, news, information from NDTV.COM. Explore more on Body Parts.