The life forms on our planet have been changing over time for more than three and a half billion years. Click on image for full size (22 Kb) Courtesy of NASA

Welcome to the Evidence of Evolution Exploratour!

This Windows to the Universe Exploratour examines the scientific evidence of biological evolution. Take the tour to travel through 10 web pages about the scientific theory that explains how and why living things change over many generations.

Exploratours have a special format. To travel through the tour, use the navigation above. To move to the next page of the tour, click the "Forward" arrow. To move backwards through the tour, click the "Back" arrow. To choose a different tour, click the blue button called "Go on another tour"!

Let's start exploring! Click the "Forward" arrow above!