This site has the complete text of Charlies Darwin's "Descent of Man."

From the Evidence for Evolution Library at PBS, this is a short article about biogeography. The distribution of animals is one source of evidence for Darwin's descent with modification.

The American Institute of Biological Sciences offers this article by Niles Eldredge, evolutionary theorist and curator at the American Museum of Natural History. Eldredge begins with Darwin's theories and summarizes subsequent thought,...

(1890-1882) Naturalist known for his theories of Evolution and Natural selection

Complete a hands-on lab simulation of natural selection to learn how it impacts a breeding population. Perform an online laboratory simulation and examine the interplay between natural and sexual selection in a population.

American writers and intellectuals played an important role in articulating the changes taking place in Industrial America in the late 1800s and early 1900s. Learn about some of the prominent writers, scientists, and philosophers at that...

A complete resource including a biography, chronology, examples of Wallace's published work, quotes, and interviews.

This award-winning site has everything you need for online lessons or independent study about the Scopes Trial. Uses an inquiry based approach with lots of primary sources, and the material can be used in conjunction with almost any...

Learning module looking at scientific explanations. Discussion covers theories and how they develop, some well-known theories and their origins, and how theories are revised and refined. Also, covers hypotheses and laws. The three...

A biography of the remarkable life of Thomas Huxley, who began his life in abject poverty, but through self-education and dedication, became a star in world science.

The site promotes the importance of Morgan and his experiments in genetics with fruit flies on the field of biology.

The Scopes Trial, also known as the Scopes Monkey Trial, was the 1925 prosecution of science teacher John Scopes for teaching evolution in a Tennessee public school, which a recent bill had made illegal. The trial featured two of the...

This is a black and white photo of Charles Darwin, a legendary scientist famous for his work on evolution and natural selection. Check out our Charles Darwin facts page for more information.

An English naturalist who established that all species of life have descended over time from common ancestry. He proposed the theory of natural selection and evolution.

[Free Registration/Login Required] An informational text about natural selection and its role in the theory of evolution. A question sheet is available to help students build skills in reading comprehension.

A fascinating look at the Scopes Trial in Tennessee where a science teacher was accused of violating a state law which prohibited the teacing of evolution. Perhaps the most interesting part of this article is the discussion of the...

A brief description of Charles Lyell and his work "The Principles of Geology" which includes the concept of uniformitarianism. A description of his views on evolution and a comparison to Charles Darwin.

Learn about the life and work of Alfred Wallace, who is best known for independently conceiving the theory of evolution through natural selection; his paper on the subject was jointly published with some of Charles Darwin's writings.

What if human consciousness isn't the end-all be-all of Darwinism? What if we are all just pawns in corn's clever strategy game to rule the Earth? Author Michael Pollan asks us to see the world from a plant's-eye view. [17:29]

Charles Darwin called the brain of the ant "one of the most marvelous atoms of matter in the world." Anna Stockl takes us inside the tiny but mighty insect brain. [4:22]

Using diagrams and descriptive illustrations, this college-level biology reference book discusses the development of evolutionary theory.

A great essay that illustrates how science is done as well as the relationship between dinosaurs and modern birds. Includes a picture to illustrate this concept, and contains many links to related sites.

Wikipedia offers a site on the topic of sexual selection, including an image and a description of one of the most famous types of sexual selection.

Read about the life and work Ernst Mayr, one of 20th century's leading evolutionary biologists.