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.

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....

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...

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...

This educational film from 1970 traces the inheritance of traits such as sex, eye color, height, and weight, showing the role of chromosomes and...

Can science help us understand these crimes?

Spared by cancer, diabetes and possibly Alzheimer’s, men and women of small stature are intriguing scientists that are trying to postpone...

A dangerous idea has threatened the American Dream from the beginning - the belief that some groups and individuals are inherently superior to others...

Many geneticists and archaeologists have long surmised that human life began in Africa. Dr. Spencer Wells, one of a group of scientists studying the...

Through our subject Adam, we reveal the incredible changes and forces that take all humankind from Cradle to Grave.