Physics is a system of models of nature according to which all phenomena are explained in terms of matter and force. Sound confusing? It doesn't have to be! Whether you need help with high school physics, need to review for a college physics class, or you're studying for the AP Physics Exam, this physics tutorial will help you understand the basics, such as Newton's Laws, the Law of Universal Gravitation, Kepler's Law and more.

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Morgan Spurlock tours the Middle East to discuss the war on terror with Arabic people.

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An inside look at the notorious Sing Sing Correctional Facility, where one of the U.S.’s only in-pri...

William Shatner sits down with scientists, innovators and celebrities to discuss how the optimism of...

After World War II, Antonia and her daughter, Danielle, go back to their Dutch hometown, where Anton...

Hard-edged cop John Kimble gets more than he bargained for when he goes undercover as a kindergarten...

This 90-minute documentary brings to life Gavin Pretor-Pinney’s international bestseller, “The Cloud...

Widower Cedric Brown hires Nanny McPhee to care for his seven rambunctious children, who have chased...

Of the Seven Wonders of the Ancient World, the Pyramid is the only one to survive. Many believe that...

The Academy Award® nominee Cosmic Voyage combines live action with state-of-the-art computer-generat...

THE GREAT AUSTRALIAN FLY looks at how a national nuisance has shaped Australia and its people, confo...

Principles of Curiosity presents a general introduction to the foundations of scientific skepticism ...

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The remarkable true story of how retiree Jerry Selbee discovers a mathematical loophole in the Massa...