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 ...

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 ...

Psychodynamic therapy is derived from psychoanalytic therapy, and both are based on the work of Sigmund Freud. Psychodynamic therapy is an in-depth form of talk therapy based on the theories and ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Samantha (Sam) Silberstein, CFP®, CSLP®, EA, is an experienced financial consultant. She has ...

Actor Samuel L. Jackson discusses his experience growing up in segregated Chattanooga. Actor Samuel L. Jackson discusses his experience growing up in segregated Chattanooga in the mid-20th century.