Henry Louis Gates, Jr. explores the Italian roots of Joy Behar & Michael Imperioli. Henry Louis Gates, Jr. explores the family trees of talk show host Joy Behar and actor Michael Imperioli—two ...

Discover a fast and powerful calculus-based method for finding square roots with impressive accuracy. This explanation shows how derivatives and iterative approximation can be used to quickly zero in ...

A Detroit man came across a little 6-year-old girl walking to school alone in the cold Monday. Joshua Threatt then joined her to make sure she made it to her destination safely. He said that in ...

Henry Louis Gates Jr.'s fascination with genealogy began at age 9 after his grandfather's funeral. His PBS show "Finding Your Roots" combines traditional genealogy with modern DNA technology. He hopes ...