What is St. Elmo's Fire?
Sometimes a lightning storm like this one heralds sightings of St. Elmo's Fire. What causes the mysterious glow sailors interpreted as a sign of salvation?
How Algae Biodiesel Works
With the global food crisis, some people feel that using food to make biofuel just doesn't make sense. Could algae be a solution? How could algae possibly fuel cars and even airplanes?
How High-speed Photography Works
Most people enjoy capturing memories on film: birthdays, anniversaries or perhaps a trip to the beach. But how can someone take a picture of a speeding bullet? How do they freeze a hummingbird's wings in mid-flight?
What causes hot flashes?
The strange feeling arrives suddenly. Intense heat feels like a blast furnace has just been ignited below the surface of your skin. As quickly as it arrived, it vanishes. What causes hot flashes?
How Tree Houses Work
Tree houses are no longer kids-only hideouts. Adults taken with Swiss Family Robinson fantasies are building fully appointed luxury tree dwellings. So how do you choose a tree?
How do scientists know if dinosaur fossils are male or female?
When they discover dinosaur remains, how do scientists know whether they found a male or a female? Would you believe it all comes down to one bone?
St. Elmo's Fire
Algae Biodiesel
High-speed Photography
Hot Flashes
Tree Houses
Fossils Male or Female?
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 as you have one liver, but two eyes. Would a second heart help you live better?
Can you build a house with found objects?
One man's bottle cap may be another man's doorbell. Whether they're working from economic necessity, an artistic bent or environmental motivation, some people build their homes from everyday objects.
What are the best video games that were never made?
For serious gamers, there's nothing worse than finding out an eagerly anticipated video game has been scrapped. Is your favorite game that never was on our list?
What's the world's cheapest car?
A car for $2,500 has to be a joke, right? Wrong. Meet the Nano from Tata Motors, the world's cheapest car and the auto industry's answer to the $100 laptop.
Is the cure for cancer a virus?
Researchers are working on ways to engineer viruses to attack cancer cells, killing the disease without radiation, medicine or surgery. How do the viruses know what to kill?
How Sword Swallowing Works
Sword swallowing is an extremely dangerous trick that doesn't involve illusions. How can it be real, and how do swords pass through the upper GI tract? Don't try this stunt at home!
Two Lungs but One Heart
Found- object House
Best Video Games Never Made
World's Cheapest Car
Cure for Cancer?
Sword Swallowing
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?
How Motorcycles Work
With gas prices soaring, motorcycles, which can achieve fuel economies as high as 85 miles per gallon, are starting to look more appealing. And unlike cars, motorcycles allow riders to connect intimately with the driving experience.
How Divorce Works
Model Christie Brinkley's divorce from husband Peter Cook is making headlines for its dramatic public nature. How does a divorce normally proceed from start to finish?
How Viagra Works
Watermelon is a summertime picnic staple, but can it also serve as an aphrodisiac of sorts? A new study has found that watermelon can exert a Viagra-like effect on the body. What is it that the little blue pill does?
How Dogs Work
Deceased real estate magnate Leona Helmsley, the so-called Queen of Mean, left billions of dollars to be used for the welfare of dogs. What's the story behind man's best friend?
How Coffee Works
Giant coffee chain Starbucks has announced that it's closing 600 of its stores in the coming year. Just what's so special about that cup of joe?
Aborigines
Motorcycles
Divorce
Viagra
Dogs
Coffee
