Can piranhas really strip a cow to the bone in under a minute?
Ever since Teddy Roosevelt witnessed a piranha feeding frenzy in the Amazon, the small fish have been known as fearsome predators. But can they really strip a cow to the bone?
How Reel Mowers Work
Eventually, you may find reel mowers sitting between treadmills and free weights at your gym. After all, these old-school, environmentally friendly gardening tools rely on human power to mow your lawn.
How Stackable Cars Will Work
The next time you're at the grocery store, take a moment to glance at the stacked shopping carts -- their space-saving design may be the basis for automobiles of the future.
How do you define hate?
We've all seen the effects that hatred has on our society, but just what is this destructive emotion? And can it be overcome?
How Web Operating Systems Work
What if you could access all your software and files from any computer? If you use a Web operating system, all you need is a Web browser and the Internet.
How SpaceShipTwo Will Work
Virgin Galactic is trying to give the average person a chance at playing astronaut for a day -- on SpaceShipTwo, the world's first civilian passenger spaceliner.
Piranhas Chow on Cows
Reel Mowers
Stackable Cars
Define Hate
Web Operating Systems
Spaceship Two
How Alcohol Works
About two-thirds of all adults partake in this mind-altering substance, yet many do not consider it a drug. But if you've ever seen someone who's had too much to drink, you know that alcohol has profound effects on the mind and body.
How Interest-only Loans Work
Interest-only loans let you afford a nice house and make low payments. But there's a catch -- once you have to pay up, circumstances may not be in your favor.
How Computer Addiction Works
Obsessively checking e-mail. Playing online games for 12 hours or more at a time. Placing more value on chat-room friends than real ones. Just what is computer addiction, and why do some doctors disagree over whether it exists at all?
How the Tweel Airless Tire Works
For more than 100 years, vehicles have used pneumatic or air-filled tires to move. Michelin has an alternative: the Tweel Airless Tire. Could it replace traditional tires?
How Hypnosis Works
The practice of hypnotism dates back centuries, and there are those who swear by its validity. Whether you're a skeptic or a believer, hypnosis is an interesting phenomenon.
Why do you have two lungs but only one heart?
Why don't you have two hearts? Here's a hint: It's the same reason you have one liver, but two eyes. Would a second heart help you live better?
Alcohol
Interest- only Loans
Computer Addiction
Tweel Airless Tire
Hypnosis
Two Lungs but One Heart
How Baleen Whales Work
Scientists have discovered that the humpback whale's heart uses tiny wirelike structures to orchestrate heartbeats, a discovery that could help us develop new pacemakers for humans. What else could baleen whales have to offer?
How the Papacy Works
The Vatican announced that it disapproves of the Church of England's decision to ordain women bishops. How does the head of the Roman Catholic Church work?
How Volcanoes Work
In Hawaii, the Kilauea Volcano is sending lava flow down to the ocean. Sunday night, a 40-foot wave of lava wowed observers. Is every volcano like this one?
How Airplanes Work
On Monday, one airplane crashed into a ranch in Colombia, killing two people. On the same day, a plane carrying Barack Obama made an emergency landing in St. Louis. How safe are these flying machines?
How Dealing With Debt Collectors Works
According to the Better Business Bureau, complaints against debt collectors rose 26 percent in 2007. Debt collection practices are regulated by the Fair Debt Collection Practices Act, but how should you deal with an unethical collector?
How Aborigines Work
The men of the Central Australia Aboriginal Congress have issued an apology to Aboriginal women for suffering caused by Aboriginal men. What is this chapter in the long and troubled history of the indigenous Australians?
Baleen Whales Pacemaker
Papacy and Female Bishops
Hawaii Volcano Erupting
Airplanes Crash Landing
Debt Collectors Complaints
Aborigines Apology
