P.K. Thomajan said, "True genius sees with the eyes of a child and thinks with the brain of a genie." He must have been referring to 10-year-old Tanishq Abraham, who at 4 years old was one of the youngest Americans accepted into the high-IQ society Mensa!

This kid is like no other. Children like Tanishq seem to defy the rules of brain development because a kid so young should not be able to do advanced physics and the such. So, how do we explain the marvel of a gifted child? Where does this amazing talent come from? Are brilliant kids born with virtuoso brains?

It's probably at the very heart of one of the oldest debates in science. Is it nature or nurture that makes us who we are, and in the case of Tanishq: what is it that makes the genius -- genes or environment? After watching this video, maybe you'll have a better idea!