Why Is It?
Skunk Smell
A listener wants to know if skunks are repelled by their own smell.
Anteater Diet
How giant anteaters get enough food into their tiny mouths to survive.
Wind Temperature
Moving air feels colder than still air, but what does the thermometer say?
Sizing Up Dogs II
A listener asks whether it's true that large dogs don't live as long as small dogs.
Baseball on the Moon
Could a well-thrown baseball sail from the moon’s surface into orbit?
Wasabi vs. Chili Peppers
A listener asks: Why does wasabi's kick disappear so quickly while the heat of chili peppers can …
Decoding Fireflies
A listener asks: What are fireflies saying with their flashes?
Why Are Plants Green?
The dominance of green chlorophyll on Earth may have come after a more purple period.
Living Cells
You probably have heard that hair is made up of dead cells. But are living cells really "alive"?