A CART race at Texas Motor Speedway was cancelled because the G-forces on the drivers were too high. How can you calculate the G-forces, and how do the cars generate forces that high?

What allows an arch bridge to span greater distances than a beam bridge, or a suspension bridge to stretch over a distance seven times that of an arch bridge? The answer lies in how each bridge type …

Gravity is a force that we experience every minute of our lives, but hardly notice or give a passing thought to in our daily routines. Have you ever wondered what gravity is and how it works? Learn …

Delta Force is the U.S. military's most elite tactical combat group. Yet the government refuses to deny its existence. Does a well-funded secret force that, allegedly, answers only to the president make the …

Electric motors power almost everything in your kitchen, bathroom and office. But how do they perform their magic?

Rail guns leave gunpowder-based weapons in the dust (one can hit a target 250 miles away in six minutes). So why isn't the military using them? Find out how rail guns can be used and learn about …

Four fundamental forces of nature are behind all that we do, from falling down to orbiting the sun. Learn about the four fundamental forces of nature.

What causes low tide? The moon's gravitational pull or tidal force causes two bulges on Earth (and its water) — one at the point closest to the moon and the other on the direct opposite side of the …