Telling powerful stories in hourlong episodes, TLC follows medical journeys of morbidly obese people as they attempt to save their own lives. The featured individuals - each weighing more than 600 pounds confront lifelong emotional and physical struggles as they make the courageous decision to undergo high-risk gastric bypass surgery. In addition to drastically changing their appearances, they hope to reclaim their independence, mend relationships with friends and family, and renew their feelings of self-worth.

Check in on the men and women featured in "My 600lb Life." Since the show, have they maintained their weight loss and continued working toward their goals? We get an update on where they are now and what's changed since the show.

Ever wonder what's happening inside your head? From dreaming to anxiety disorders, discover how your brain works with this illuminating series.

Author Michael Pollan leads the way in this docuseries exploring the history and uses of psychedelics, including LSD, psilocybin, MDMA and mescaline.

Sex, joy and modern science converge in this eye-opening series that celebrates the complex world of women's pleasure — and puts stubborn myths to rest.

From KQED in San Francisco and the Virus Laboratory of the University of California, Berkeley, comes a distinguished series of eight half-hour programs on the nature of the virus. Prepared using a National Science Foundation grant, the series is designed to explain to the viewer some of the basic facts about viruses, those structures so essential to life and health, facts which for the most part have only been discovered in the past twenty-five years. Drawing on advanced scientific techniques such as microcinematography, electron microscopy and freeze drying, as well as on animation, large-scale models and drawings, the programs combine lectures with demonstrations to give the viewer an extremely vivid picture of this complicated topic. Particularly emphasized are facts about the virus' relation to bacterial disease, to polio, and to cancer, and new information about viruses which may not yet be generally known to students of biology or to the non-scientific public.