Create your list
Browse from thousands of movies and shows.
We send out your disc the next business day.
Watch and repeat
Free returns, plus no due dates or late fees.
Chronicling the 2005 discovery of a Turkish family with several members who walk on all fours, this Nova documentary explores intriguing questions about genetics and evolution. The Ulas family includes five adults, ranging in age from 18 to 34, who walk with their feet and palms on the ground. Geneticists and anthropologists explore whether these siblings represent a missing link or a genetic anomaly.