Video ClipsSee all »
Stephen finds out what's in children's textbooks and discusses the ethics of science with Rebecca Skloot.
Rebecca Skloot discusses Henrietta Lacks, whose cells were the first to be immortal and commercialized.
11:40 — Science writer Rebecca Skloot discusses her new book The Immortal Life of Henrietta Lacks.
Trending TonightSee all »
Paul Wesley and Candice King reveal their favorite Stefan and Caroline moments of all time