All in the Family

In this Evolution Web feature, test your skills at judging who's who on the tree of life while you learn about the tools and methods of cladistics.

Animal Classification Game

Learn about classes of animals and test your ability to identify animals as mammals, birds, reptiles and more in this interactive activity adapted from Sheppard Software.

Common Past, Different Paths

This time-lapse microphotography of developing embryos shows the common ancestry of all vertebrates. Footage from NOVA: "Odyssey of Life."

Accessibility features: Audio Description, Caption

Creepy Crawlies

This interactive feature from the NOVA: "Odyssey of Life" Web site explores the often unwitting relationship we share with the billions of organisms that reside in our bodies and in our homes.

Human Chromosome 2

In this video segment adapted from NOVA: "Judgment Day: Intelligent Design on Trial," learn how modern genetics and molecular biology offer compelling support for evolution. The video features an interview with biologist Ken Miller.

Accessibility features: Caption

Night Vision

This interactive feature from the NOVA "Leopards of the Night" Web site highlights the nighttime habits and abilities of a wide range of nocturnal creatures.

Unity of Life

Students learn how classification schemes are used to illustrate the relationships among organisms and, ultimately, the unity of life.