Remember that traffic accident you avoided the other day? In another universe, you died. Or at least you did according to the Many-Worlds theory. Explore some sticky questions.
How Time Travel Will Work | How Time Works

The U.S. military has spent millions of dollars and thousands of man-hours on ... a video game. "America's Army" is free and it has amazing features. Why are people getting so upset about it? How the Green Berets Work | How the U.S. Army Works

Mosquitoes have been around for 30 million years, and in that amount of time, they've gotten really good at biting. So how do you protect yourself from them? And do they serve a purpose?
Discovery's FYI: Mosquitoes

A man has a gun. But this is no ordinary man, and this is no ordinary gun. This isn't a setup for a sci-fi thriller. It's the premise for quantum suicide.
How Atoms Work | How Atom Smashers Work

People often store water for emergencies, but you might be surprised to find out that water can go bad just like fresh food. How can you store it safely?
How Food Preservation Works | How Water Towers Work

Despite their monumental proportions, the most phenomenal thing about whales isn't how big they are: It's the way they live. Whales are mammals, but they spend their life in the ocean.
Corwin's Quest: Whales

"The Terminator" showed us a future where battalions of robots wage war on mankind. While that’s not happening just yet, many countries are looking into creating robot soldiers.
How Robots Work | How Military Robots Work

On a slot machine, all you have to do is pull a lever. But do machines pay out randomly, or on a schedule? Do your chances of winning increase if you play the same machine all night?
Discovery's Understanding the Odds: Gambling

The advent of electronic mail changed the art of letter writing forever. Learn all about the system that routes billions of messages each day and keeps you connected.
How Web Servers Work | How Domain Name Servers Work

When you work on your home to make it more energy efficient and less expensive to maintain, you must also consider safety issues. Learn about making safe adjustments to your home.
How Water Heaters Work | Furnace Maintenance

Marshall Brain, the original brain behind HowStuffWorks, discusses Dubai, rock balancing, FBI files, killer bacteria, credit card secrets and Leopard.
Daily Podcast: How does a safety chute work?