Finding Your Roots

From roots in the Deep South to the slums of New Jersey, "Who Do You Think You Are?" follows the journeys of some of the most well-known names in American popular culture. Watch as celebrities discover unknown details about themselves and their families while researching their ancestry with the help of historians and genealogical experts.

From eradicating disease to selecting a child's traits, gene editing gives humans the chance to hack biology. Meet the real people behind the science.

Caitlyn Jenner's first public appearance since her transition included making an impassioned, heartfelt speech at the ESPY Awards about the need for understanding transgender issues and "accepting people for who they are." For her part, Caitlyn -- formerly known as Bruce Jenner -- eagerly welcomes the responsibility to educate people. Follow Caitlyn Jenner's life as a transgender woman, telling her intimate story as she seeks out her "new normal," while offering a better understanding of many of life's challenges. Most of all, Caitlyn looks forward to living for the first time as the person she feels she was born to be. The docu-series also explores what her transition means for the people closest to her, including her children and stepchildren, and how those relationships are affected.