Learn about the scientific hypotheses of the origin of life on Earth. [5:55]

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.

Find out what Carl Stetter is doing to find the closet relatives to the earth's earliest life forms.

A collection of links to activities and lessons that could be used for Earth science concepts including the foil record, creating a timeline of Earth's history, plate tectonics, dinosaurs, and the progression of life on Earth.

Nova offers an enlightening conversation with astrophysicist Neil deGrasse Tyson. Topics include origins of the universe, multidisciplinary approaches to science, exciting recent discoveries, his position as director of the Hayden...

Looks at what life was like at home in the U.S. during World War II using original photographs.

If you are a living, breathing human being, chances are you have felt sad at least a few times in your life. But what exactly is melancholy, and what (if anything) should we do about it? Courtney Stephens details our still-evolving...

This short article describes some of the various political and religious groups and individuals that were operating during the time of Jesus. Some of these include the Romans, King Herod, the Pharisees and others.

This Public Broadcasting Service (PBS) activity explores the controversy over whether or not there is life on Mars. Part of the Mysteries of Deep Space Program that originally aired in April 1997, the activity includes instructional...

This online reproduction of the original 1913 text by Gardner W. Allen is organized chronologically beginning in 1775 and ending with 1783. An appendix includes source citations, a list of vessels, officers, privateers and other...

Learn how art through the ages has been influenced by the Earth and the heavens. See paintings that attempted to explain the Earth's creation from a scientific standpoint, sacred architecture that provided a place to worship the heavens,...

This article reviews the life and discoveries of John Needham.

Learn about the very cold, dark region of the ocean known as the abyss. Includes information on the origin of the name of this ocean zone, as well as information on its depth and animal life.

Students gather information about pond life including plants, animals and insects through research field observations, and specimen collections. Students report their information along with original illustrations through a series of...

Three seventeenth-century buildings, two portraits, and three original accounts from Virginia and the Carolinas about the qualities and conditions of life in these southern English colonies that led to success and growth.

The biogenesis theory is explained and how it differs from the theory of spontaneous generation. The work of early scientists to prove or disprove these theories is described, including discoveries in microbiology. Louis Pasteur is...

Explore all aspects of Judaism by clicking on the subtopics or page numbers at the top of the page. Check your understanding by doing the Drop N Drag, Self Check, and Flash Card Activities as you learn about Judaism.

Go directly to the teaching resource that accompanies the PBS series "Benjamin Franklin: An Extraordinary Life, An Electric Mind" to find eight lesson plans that support the study of Benjamin Franklin and his place in history. Lessons...

Twin Oaks, an original commune that came together in the 1960s, is still thriving today. Learn about its philosophy and way of life.

Learn about the Thomas Jefferson Papers, a collection of more than 27,000 original documents from the life of Thomas Jefferson. Includes a portrait, a timeline and an overview of the collection. Click on "browse by series" to view the...

Follow Virginia as it matures into a thriving colony. Students will enjoy this comprehensive slideshow that includes pictures, maps, timelines, and an original newspaper advertisement looking for a runaway slave. Information on the...

This site, which is provided by the The William Blake Archive, gives a discussion of Blake's life as a double artist and his inspiration for both his art and poems. Users will find images of the original pages for many of Blake's...

A detailed biography on the works of African American writer and 1993 Nobel Prize for Literature winner, Toni Morrison. Contains information on the themes and subject matters of her most famous books while also giving some information on...

Site from the Colonial Williamsburg Foundation combines Science and Social Studies. As students examine the various methods of predicting the weather, in Colonial Williamsburg.