WHAT DARWIN NEVER KNEW
PBS 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 alone. What explains this explosion of living creatures--1.4 million different species discovered so far, with perhaps another 50 million more to go? The source of life's endless forms was a profound mystery until Charles Darwin's revolutionary idea of natural selection. But Darwin's radical insights raised as many questions as they answered. NOVA attempts to answer the riddles that Darwin couldnít explain. (See more in the Review section.) DVD - 120 Min.