The HMS Beagle, carrying Charles Darwin, sailed for five years and circumnavigated the world. Darwin recorded his observations in journals and later published them in 1839. This site contains pictures related to this expedition.

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

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

[Free Registration/Login may be required to access all resource tools.] This study guide looks at Darwin's theory of evolution and natural selection. It also looks at some of the evidence supporting the theory of evolution (comparative...

Herbert Spencer's article "Progress: It's Law and Cause" in which he discusses his theories of evolution prior to Darwin's publishing.

Discovery School provides a lesson plan on evolution by having students make a timeline of the history of evolution. This timeline will have dates and, above or below the dates, will provide details about the people who have played major...

Evolution is the change of inherited characteristics within a population over time through natural selection, which may result in the formation of a new species.

Examine Charles Darwin's voyage on the HMS Beagle and his ideas about evolution and natural selection.

Interactive animation illustrates how Charles Darwin used his study of finch beaks to explain evolution. A phylogenetic tree diagram shows how the birds' color and beak shape changed over generations.

Biography of Louis Agassiz, a natural historian and a contemporary of Charles Darwin. He was most famous for developing his theory of an Ice Age. Agassiz argued vehemently against the theory of evolution, based on his interpretations of...

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

In this text excerpted from Chapter 3, "Struggle for Existence," of Charles Darwin's "On the Origin of Species," Darwin draws on firsthand and historical information for his observations about evolution.

Explore isolated volcanic islands. Charles Darwin's observations and collections of the Galapagos wildlife in 1835 contributed to his theory of evolution by natural selection. [7:08]

Darwin's theory of natural selection and his ideas about evolution are explained here.

This provides access to a webbook about How Humans Evolved. The following topics are covered: (1) How Evolution Works, (2) Primate Behavior and Ecology, (3) The History of Human Lineage, and (4) Evolution and Modern Humans. Each chapter...

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...

Use the scientific reasoning and critical thinking to take an in-depth look at the basics of biology.

When the "Origin of Species" was published in 1859, the ambitions and scopes of science were dramatically expanding. "Origin of Species" marked the transition of biology from a prescience to a science. [4:04]

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.

A biography of Thomas Henry Huxley, a contemporary of Charles Darwin, and a strong supporter of his theory of evolution.

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]

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.

Museum site note on the history of evolutionary thought and includes scientists and thinkers who have contributed to our understanding of life on Earth. Links are provided for da Vinci, Linneaues, Erasmus Darwin, and others.