Jack Youngelson

As scientists learn to read the genetic code, they grapple with the dangers inherent in increasingly sophisticated and easily available methods of intervening in the very essence of what makes us human, our DNA.

Celebrated photographer Tierney Gearon’s work has been labeled manipulative, disturbing and even perverse. A former model and dancer, Gearon came to notorious fame in 2001 when photos of her own naked and masked children in the “I Am a Camera” show at London’s Saatchi Gallery had authorities threatening child pornography charges. The mixture of art and family can almost be too close for comfort, but like much of Gearon’s photographs there...

Presented and written by Professor Henry Louis Gates, Jr., this series journeys deep into the ancestry of a group of remarkable individuals and provides new understanding of personal identity and American history. Part 8: The ancestral pasts of Sanjay Gupta, Margaret Cho and Martha Stewart.

Presented and written by Professor Henry Louis Gates, Jr., this series journeys deep into the ancestry of a group of remarkable individuals and provides new understanding of personal identity and American history. Part 5: The family histories of Pastor Rick Warren, Rabbi Angela Buchdahl, and Sheikh Yasir Qadhi.

Presented and written by Professor Henry Louis Gates, Jr., this series journeys deep into the ancestry of a group of remarkable individuals and provides new understanding of personal identity and American history. Part 9: The ancestral pasts of John Legend, Wanda Sykes and Margarett Cooper.

Presented and written by Professor Henry Louis Gates, Jr., this series journeys deep into the ancestry of a group of remarkable individuals and provides new understanding of personal identity and American history. Part 10: The ancestral pasts of Michelle Rodriguez, Adrian Grenier and Linda Chavez.

Presented and written by Professor Henry Louis Gates, Jr., this series journeys deep into the ancestry of a group of remarkable individuals and provides new understanding of personal identity and American history. Part 3: The ancestral pasts of journalist Barbara Walters and educator Geoffrey Canada.

Presented and written by Professor Henry Louis Gates, Jr., this series journeys deep into the ancestry of a group of remarkable individuals and provides new understanding of personal identity and American history. Part 7: The ancestral pasts of Samuel L. Jackson, Condoleezza Rice, and Ruth Simmons.