The Thread of Life

After a woman's at-home DNA test reveals multiple half-siblings, she discovers a shocking scheme involving donor sperm and a popular fertility doctor.

Many geneticists and archaeologists have long surmised that human life began in Africa. Dr. Spencer Wells, one of a group of scientists studying the origin of human life, offers evidence and theories to support such a thesis in this PBS special. He claims that Africa was populated by only a few thousand people that some deserted their homeland in a conquest that has resulted in global domination.

A well-preserved mammoth carcass is found in the remote New Siberian Islands in the Arctic Ocean, opening up the possibility of a world-changing “Jurassic Park” moment in genetics.

Can science help us understand these crimes?

Earth teems with a staggering variety of animals, including 9,000 kinds of birds, 28,000 types of fish, and more than 350,000 species of beetles. What explains this explosion of living creatures—1.4 million different species discovered so far, with perhaps another 50 million to go? The source of life's endless forms was a profound mystery until Charles Darwin brought forth his revolutionary idea of natural selection. But Darwin's radical insights raised as many questions as they answered. What actually drives evolution and turns one species into another? To what degree do different animals rely on the same genetic toolkit? And how did we evolve?

Three million years ago, camels roamed through Greenland’s endless forests and our ancestors lived in the trees. It all came to an end with the Ice Ages. What died and what survived, as natural selection shaped the evolutionary tree during this epochal shift from hot to cold? Until now, scientists have known less about the natural world before the Ice Age than they did about the age of dinosaurs, which ended 64 million years ago. A new discovery is set to reveal this lost world, species by species. Led by Danish gene-hunter Eske Willerslev, a team of scientists for the first time in history is sequencing DNA from before the Ice Age. The picture that emerges is of a hot planet, when forests blanketed the Arctic and carbon levels matched those in our atmosphere today. Is this a portrait of our own climate future?

A dangerous idea has threatened the American Dream from the beginning - the belief that some groups and individuals are inherently superior to others and more deserving of fundamental rights. Such biological determinism provided an excuse for some of America's most shameful history. And now it's back. This documentary reveals how biologically determined politics has disenfranchised women and people of color, provided a rationale for state sanctioned crimes committed against America's most vulnerable citizens, and now gains new traction under the Trump administration.

The made-for-cable documentary film The Real Eve is predicated on the theory that the human race can be traced to a common ancestor. The mitochondrial DNA of one prehistoric woman, who lived in Africa, has according to this theory been passed down from generation to generation over a span of 150,000 years, supplying the "chemical energy" to all humankind.

Spared by cancer, diabetes and possibly Alzheimer’s, men and women of small stature are intriguing scientists that are trying to postpone age-related illnesses. What mechanisms protect these small Ecuadorian from certain illnesses? From Quito to Los Angeles, via Tel-Aviv, the film follows the revolutionary research, step-by-step, that is attempting to understand and prevent diseases such as cancer. And outlines ways to live in good health… for as long as possible.

The film tells a very personal story from two perspectives: our protagonist is both doctor and patient. As a patient, he has struggled with recurring depression for years, and as a doctor he wants to find out why. The search for the origins of his illness leads him into the realm of his own genes and casts light on the fundamental changes facing modern society as a result of the tremendous progress being made in the field of genetic sequencing. Along the way, he meets a host of people – researchers, artists, visionaries – who have developed their own very individual approach to genetic coding and are drawing attention to the social significance of genetic technology. The film does not restrict itself to a scientific view of the subject but also makes use of artistic visions and more playful approaches to genetic blueprints.