A brief essay about older and more recent ideas on when the first cells evolved. Good coverage of different scientific theories about the origin of life.

[Free Registration/Login may be required to access all resource tools.] Learn about the evolution of eukaryotes which is explained by the endosymbiotic theory.

[Free Registration/Login may be required to access all resource tools.] Take a close look at the endosymbiotic theory scientists have developed to explain the evolution of eukaryotes. Understand that chloroplast and mitochondria used to...

A brief history of the internet, written by those who were involved in the development evolution of the Internet. This history revolves around four distinct aspects: the technological evolution, operations and management aspect of a...

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]

Cosmology is the study of the "large scale properties of the universe as a whole." In this set of sites, NASA provides information on the Big Bang Theory in a simplified language. The beginning, evolution, structure, fluctuations and...

Provides a general overview of spiral galaxies, including descriptions of the different classes of spiral galaxy.

This University of St. Andrews site contains biographical information and findings of Christiaan Huygens.

An article giving a brief introduction to evolutionary biology. The article addresses misconceptions as well as the basics of the theory of evolution.

At the online companion Web site of "Evolution," the seven-episode series on PBS, delve into the private thoughts of a reluctant revolutionary--Charles Darwin.

In this letter written to his friend and mentor Charles Lyell less than three weeks after the publication of "On the Origin of Species", Darwin describes the reaction of the great anatomist Richard Owen to his theory. From Charles...

Paper outlining an evolutionary theory of global politics. The theory is based on four propositions but the paper focuses on the propositions stating that the institutions of world politics evolve and that the rise and decline of world...

Instructional module focusing on Charles Darwin's theory of Descent with Modification. Discusses how slight changes from parent to offspring create variation and potentially create new species over time. Site also includes an interactive...

Two paleontologists from Montana State University, John Scannella and Jack Horner, discuss their newly released theory that Triceratops and Torosaurus were actually the same dinosaur but at different stages of their life cycle. [Date of...

Explains the basic tenets of Dalton's atomic theory.

Learn about the endosymbiotic theory. This theory explains the evolution of cells from a mitochondria and chloroplast working together in a symbiotic relationship to the current cell structure.

This interactive timeline provides information on the big bang as well as other major events of universe evolution. It also provides predictions about the universe's future.

Profile of Keynes excerpted from Daniel Yergin and Joseph Stanislaw's book on the evolution of the global economy, "The Commanding Heights."

Charles Darwin was born in England on February 12, 1809. He was a "naturalist," best known for his theories of evolution. Darwin collected evidence that all life on Earth "evolved" from a common ancestry. He studied the process of...

An easy-to-understand article traces the origins of modern humans through the use of a simple graph. Various models of migration are also discussed.

Learn about the Nobel Prize winner for his mathematical theory of the physical processes of importance to the structure and evolution of the stars.

A brief biography of Wallace's time spent in the spice islands, and how it related to his theory of evolution. Also includes a description of the sailing vessel, 'The Alfred Wallace', which will sail to the spice islands in honor of the...

A very good article on the fossil evidence and the prominent theory on the evolution of birds. Addresses both sides and presents information. Predominently agrees with the pro-dinosaurian point of view.

[Free Registration/Login Required] How can we predict an atom's structure, if we cannot see an atom? Using the Rutherford's Gold Foil Experiment, make your own model and test out the model.