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Why Do I Laugh at Funny Things? Laughter spreads positive emotions, decreases stress, and contributes to the cohesiveness of a group.
Why Can't Human Beings Breathe Underwater? When you breathe in air, the air travels from your nose, down your trachea (windpipe), and into your lungs.
What Happens if You Eat Dog Food? You can't really know for sure.
What is the Origin of Veterans Day? Veterans day can be traced back to the end of World War I.
Why Are Lips Red? Did you know that the outline or the border of your lips is a special feature of humans only?
Do Mouthwashes Work? Mouthwashes can zap bad breath.
When Are We in a Recession? When the economy takes a slide into the toilet and stays there for many months.
Do Lie Detectors Work? Polygraphs don't actually out a liar.
Why Will It Take So Long to Fix the Large Hadron Collider? The repair involves warming up parts of the huge machine from nearly absolute. zero.
How Much is $700 Billion? Comparisons bring the financial bailout plan down to earth.
Does Hot Water Freeze Faster Than Cold Water? Whether or not hot water can freeze faster than cold may seem like a no-brainer.
Why Does Sensationalism Sell? Here is why a story about a young woman missing in Aruba dominated TV news.
Will the Large Hadron Collider Destroy Earth? Scientists say the world's largest atom smasher won't destroy Earth.
How Do Vultures Find Dead Stuff? Vultures sniff out their next meal from miles away.
Is Sushi Safe to Eat? The raw fish and rice in sushi require careful preparation for safe eating.
Can School Make Kids Sick? Most kids plead against school, and parents later receive that call from school.
How Hot Is the Yellowstone Hotspot? Yellowstone National Park's hotspot is tepid at best, according to a new study.
How Strong Can a Hurricane Get? The Saffir-Simpson hurricane only goes up to Category 5.
Why Do Lizards Do Push-Ups? Lizards work out for the same reason a guy at the gym might: as a display of strength.
Why Are 'Mama' and 'Dada' a Baby's First Words? Many babies delight their parents with recognition upon uttering their first words. Now scientists think they know why.
Why Do We Get Baggy Eyes? As we age, our eyes inevitably take on a baggy look. Now scientists think they know why.
What Is Baking Powder? It's something that didn't exist until the mid-19th century
What is Baking Soda? It's sodium bicarbonate, and it comes from a mineral called natron.
What's Inside a Planet? The planets in our solar system contain a diverse array of ingredients.
What's Inside the Giant Planets? A look inside the giants.
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