Nova Season 0 Episode 3 -

Airdate: 2002-Jan-01

Episode summary:

What underlies the incredible diversity of life on Earth? How have complex life forms evolved? The journey from water to land, the return of land mammals to the sea, and the emergence of humans all suggest that creatures past and present are members of a single tree of life.

About Nova series:

A weekly documentary series, each episode providing an in-depth look at a different subject of scientific research. Subjects examined by this show ...Show more >