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Study: Americans Don't Understand OthersAmericans differ from other cultures in understanding others, study suggests.
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Why Does Jell-O Jiggle?As the concoction slowly cools in the fridge, some bonds don't reconnect. These gaps are filled with water and give the dessert its wiggle.
planet-earth -
Why Do We Have Belly Buttons?Belly buttons aren't just for collecting lint.
reproductive-health -
Why Do We Die?We die naturally because our cells die.
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Why Do Drops of Liquid Form Spheres in Space?Water is treated differently in outer space.
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Why Aren't Turkey Eggs Sold at the Grocery?Gobbling turkeys do lay eggs. But selling them in grocery stores would have its drawbacks.
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What Makes Us Burp?The only thing grosser than a burp is what causes it: bacteria deep in your belly. And, of course, extra gas and fizzy drinks.
food-drink -
What is Fool's Gold?Pyrite may be shiny and brass-colored, but any miner will tell you, it is not as good as gold.
planet-earth -
What Is an Omnivore?Omnivores eat whatever they can get their paws, fins, or sticky fingers on.
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What Is an Herbivore?Herbivorous animals are vegetarians. They only eat plants.
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What is a PET Scan and How Does it Work?Because positron emission tomography is a mouthful, radiologists call it a PET scan for short.
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What is a Gold Karat?Most gold jewelry isn't made of pure gold.
planet-earth -
What Is a Carnivore?In the wild, carnivores are king. They prey on other animals. They eat primarily meat.
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How Old Were the Oldest Dinosaurs?Dinosaurs are keeping mum on exactly how many birthdays they celebrated back in the day.
dinosaurs -
How Much Gold is in Fort Knox?To keep up with the country's mounting gold reserves, the United States Bullion Depository opened at the Fort Knox U.S. Army Garrison in Kentucky in 1937.
human-behavior -
How Do We Catch the Flu?If you want to be one of the 20 percent of Americans who catch the flu this season, shake hands with a lot of sick people.
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Where Do Fruit Flies Come From?Fruit flies need very little to call your kitchen their home, sweet home."
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Why Do Birds Lay Eggs?Oviparous animals produce eggs that hatch after leaving the mother's body.
turtles-tortoises -
How Do Scientists Know the Universe is Expanding?We thought we'd ask Geza Gyuk, Director of Astronomy at the Adler Planetarium and a research scientist at the University of Chicago. Here's what he said:
cosmology -
Were Dinosaurs Colorful?Dinosaurs had bumpy skin, similar to the skin of an alligator or a flightless emu bird. But their skin color remains a mystery to paleontologists today.
dinosaurs -
How Do Dinosaurs Get Their Names?Dinosaurs earn their names just like Tiny Tim, Andre the Giant and William "The Fridge" Perry.
dinosaurs -
Is It True That No Two Snowflakes Are Identical?Snowflakes come in myriad shapes and styles, affected by varying temperatures and what they bump into.
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How Do Snakes Swallow Large Animals?A snake's jaw is rigged with tendons, muscles, and ligaments that give it a gymnast's flexibility. The jaws do not dislocate, however.
snakes -
How Loud Can You Play Music Without Damaging Your Hearing?If you're listening to Katy Perry pop or The Red Hot Chili Peppers rock and have to raise your voice to be heard over the music, it's time to turn the volume down.
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