Khan Academy: The History of Everything Ted

Video tutorial explores and explains the story of Atomic Chemistry and how we got here. [8:46]

If you observe Mars over time you will notice that it gradually grows and shrink over time. Why does this happen? Read this article to see the explanation for this observation.

How did we get here? Well, in terms of Atomic Chemistry, Hank takes us on a tour of the folks that were part of the long chain of other folks who helped us get to these deeper understandings of the world. From Leucippus to Heisenberg to...

Learn about the launch of Sputnik and the establishment of NASA.

Can ancient scriptural accounts of the world's creation by God be reconciled with Darwin's new story? This article looks at three responses to this question: Conflict, Contrast, and Convergence.

The quest for energy has always been a balancing act. As humans have gained greater control over their environment, they've found abundant resources - and faced numerous challenges. This article traces the history of our quest for energy.

A unit planner for teachers who want to use Khan Academy's unit on the Big Bang theory. Teachers can find teaching guides, unit slides, and reading materials.

Crash Course is a fast, funny, irreverent look at history beginning with the Big Bang Theory. In this episode, brothers John and Hank Green gives us their take on what makes Big History so darn important. [13:55]

Learn why objects fall to the ground with Newton's Law of Universal Gravitation as explained by this video. Video will explain history of discovery of the concept of gravity. It will also show how to solve for the force of gravity. [15:42]

This video lesson explains how strokes are diagnosed by the patient's family history and physical exam. This information is intended for college students who are taking courses in the health and medical fields.