View the iconic "I Want You" poster, versions of which were used to recruit forces for the U.S. armed services during both world wars. Also view the poster in context, with other posters and broadsides used to send Americans to war.

Read the speech given by President Bill Clinton in which he explains to the American public why he ordered the U.S. Armed Forces to join NATO in protecting Kosovo from the brutality of the Serbian troops. He gives the background behind...

Guardian correspondent Kimberly Stanton discusses human rights abuses occurring in Colombia and the attempts of Colombian President Juan Manuel Santos to distance himself and his government from them. (June 5, 2011)

Discover more about the women of the Naval Reserve during World War II.

This site provides an introductory look at torque, the measure of how much a force acting on an object causes that object to rotate. Provides a definition of torque, illustrations, and also a formula to define torque.

Students observe the relationship between the angle of a catapult (a force measurement) and the flight of a cotton ball. They learn how Newton's second law of motion works by seeing directly that F = ma. When they pull the metal "arm"...

Kids learn about Veterans Day. The history and facts about this holiday that honors the brave men and women who have served in the armed forces.

With this project you'll send ping pong balls flying through the air with a rubber-band powered catapult. This catapult makes it easy to reproduce the launch angle, and to measure the amount of force applied to the projectile. Armed with...

Our bodies function necessarily under the presence of gravity; how blood pumps, a sense of balance and bone growth are all due to life in a world where gravity is an inescapable reality. Armed with experiments from neuroscientists David...