"Life on Mars" examines Meteorite ALH84001 and its incredible journey from Mars to Earth and "Destination Mars" introduces the viewer to the prospects of a manned journey to Mars.

Antibiotics have revolutionized the practice of medicine. The magic bullets have been used to fight the bacteria that cause many of man's ill including veneral disease, tuberculosis, stomach uler, mastoiditis and other common infections. However, bacteria that once yielded so quickly to these wonder drugs have learned to resist the antibiotic onslaught. Today, infections that were once easily cured are not responding to the usual treatments. We have abused antibiotics to the point where we must now go back to the lab and begin research to develop a whole new generation of drugs. Also explores the use of antibiotics in agriculture and the possible side effects it has on new strains of resistant bacteria. Includes looking at some of the new uses that are being found for the most important weapon ever developed for medicine arsenal.

Program examines various aspects of aphrodisiacs and their use to enhance sexual desire and performance. Includes the history, scientific research, and personal narratives related to all types of aphrodisiacs and their effectiveness.

The digestive tract is a hugely complex arrangement of organs working together in harmony to give your body all the benefits it needs from the food we eat and to protect us from harmful bugs and bacteria. By looking at a typical American family we are able to see how lifestyle, fast foods and work dictate what we eat, how we eat and therefore how well our digestive system works. Eddie the Enzyme pops up with step by step advice, on the do's and don'ts of good digestion. With him and the help of an expert nutritionist we explain precisely what food makes for good digestion.

Explores what's happening in our bodies when we are happy. Studies the chemical reaction going on in the brain.

One of the world's top paleontologists discusses paleontological evidence that contradicts myths about the feared Tyrannosaurus rex. Jack Horner says T. rex was not a hunter at all. The fiercest giant of dinosaur lore was but a well-designed scavenger that had much more in common with buzzards and hyenas than with lions and tigers. Includes computer-generated T-Rexes in action.

Eighteen months into clinical trials for new cancer vaccine, world renowned Doctor, Steven Rosenberg from the National Cancer Institute, now has conclusive evidence that our bodies can be made to attack cancer. Working with patients that are terminally ill with the deadly skin cancer melanoma, Dr. Rosenberg has found that 42% of the patients are seeing their cancer disappear.These result more than double previously known response rate for melanoma and give real hope to patients suffering from this disease. Part medical detective story, part real-life drama. Two patients have been their cancer "melt-away", and one is nearly cancer free.

The executive Beth Emhoff returns from a business trip to Hong Kong with a stop over at the Chicago airport, where she has sex with her former lover. Beth feels ill but she believes that the problem is jet leg. She travels back home to Minneapolis and spreads the virus to her son Clark and her husband Mitch. When Beth and Clark die, Mitch goes in quarantine where the doctors realize that he is immune to the mysterious virus. Meanwhile in Hong Kong, London and in a small province, people have the same disease. The American CDC and the World Health Organization give their best effort researching the virus that is spreading in a geometric progression. The outbreak is threatening the worldwide population of annihilation, unless a vaccine is well-succeeded. The scientists begin a fight against time.