[Free Registration/Login may be required to access all resource tools.] An introduction to Charles Darwin and his theory of evolution by natural selection is offered for students. Meet the writers who influenced Darwin to develop his...

[Free Registration/Login may be required to access all resource tools.] Overview of the evolution of life and Darwin's theory of evolution.

The complete original text of On the Origin of Species by Charles Darwin.

[Free Registration/Login Required] A detailed lesson with downloadable PowerPoints and student handouts that examines how the study of comparative embryology provides support for the theory of evolution.

An interview with Douglas Futuyma, renowned evolutionary scientist, explaining the theory of natural selection and how it steers toward evolution.

[Free Registration/Login may be required to access all resource tools.] Covers the evolution of life.

These pages are part of a site called "Evolution," that accompany a textbook by the same name. Mark Ridley is the author. This section is about Darwin, his travels, and his observations that led to "On The Origins Of Species."

Read the fascinating transcript of the proceedings in court when Clarence Darrow called William Jennings Bryan to the stand to expose the weakness in his argument against evolution in the famous Scopes trial.

Scientific article explaining what natural selection is, and how it manifests itself through genetics and from generation to generation. Natural selection is compared to genetic drift, both of which cause evolution to occur. The limits...

[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will explain the law of conservation of mass, the law of definite proportions, and the law of multiple proportions. They will also...

Charles Darwin's theory that all living organisms are connected in some way has been confirmed through intense studies over centuries. Understand the similarities that bond all things living to the same family tree by checking out this...

These pages are part of a site called "Evolution," that accompanies a textbook by the same name. Mark Ridley is the author. Here he discusses theories for species change that were before Darwin published "On the Origin of Species."

Learn more about the theory that dogs evolved from wolves in this video from Nature. [5:03]

The expansion and explosion of a star is described at it goes through its nova phase. Current theories are discussed.

This lecture covers the topic of life now and into the future, including the role genetic engineering will play.