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

[Free Registration/Login may be required to access all resource tools.] Describes the discovery of viruses and two hypotheses for the origin of viruses.

This brief article explains the concept of original jurisdiction, especially in terms of the U.S. Supreme Court. There are links in the article to actual cases.

Mary Maverick was married to one of the leaders of the Republic of Texas and knew major figures of the day. She is important because of the diaries she wrote detailing her life on the Texas frontier, which have been preserved and can be...

Discover Alfred Wegner's ideas relating to continental drift and seafloor spreading which are both evidence to the concept of plate tectonics.

Background information and slideshow presentation on creating the Origin of Species scientific manuscripts.

This companion website of a NOVA program that aired in 1999 features extensive information that focuses on moon research and includes a history of the Apollo missions as well as the science of the moon's origins.

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."

A concise resource presenting the origins of the Cold War.

An illustrated slide show highlighting the origin and make-up of our solar system.

Bite-size introduction to two scientists-Hubble and Lemaitre-who played key roles in formulating the theory of the origin of the universe known as the big bang. Includes an interactive timeline on which you can plot out the approximate...

Learn about the origins of the Samurai, The First Warrior Government (The Kamakura Shogunate, 1185-1333, The Second Warrior Government: The Ashikaga Shogunate of the Muromachi Period (1338-1573), The Third Warrior Government: the...

[Free Registration/Login Required] In this lesson, students will learn the basics of the coordinate plane including quadrants, x and y axis, ordered pairs and the origin. A 5 question quiz is included to see if they get it.

Great site describing New York City, its geography and origins, as well as the boroughs.

This downloadable booklet is a comprehensive teacher's guide you can use to help students' understand Muslims and their countries and cultures of origin. 100 pages include background information and teaching tips, activities and...

A reproduction of the original warrant for the arrest of Elizabeth Proctor and Sarah Cloyce is shown together with a facing transcription.

Explore the origin of energy bands in crystals of atoms. The structure of these bands determines how materials conduct electricity. Java required.

Read an original transcript, and view an image of a report on the Missouri Compromise of 1820. This legislation admitted Missouri and Maine as states into the Union.

The Monroe Doctrine has been used in the past 180 years to let the United States' stance on European involvement in the Western Hemisphere be known. On this interesting site you can view an interactive copy of the original pages of the...

Read the complete text of the Virginia Plan that proposed a strong central government consisting of three branches. You can also view images of the original drafts.

Learn about this document that charted a government for the Northwest Territory. View the complete text and images of the original document.

Included at this site is the complete text and images of the original document of the Voting Rights Act of 1965. This law outlawed the discriminatory voting practices that African Americans had endured.

Contains all the text and images of the original document. Also includes a summary of the history behind the signing of this treaty.

Shows the original document of the executive order that President Kennedy signed establishing the Peace Corps in 1961. Gives background information and the complete easy to read text.