Vaccine Myths
A listener asks: is there any truth to rumors that vaccines cause autism?
Why Is It?
Autumn Color
Fall colors come in several shades. But why the different colors?
Shaved Hair
A listener asks: If you shave, does hair really grow back thicker and darker than before?
Sleeping Dolphins
A listener asks: Why don't dolphins drown while they sleep?
Spider Webs
A listener asks: Can spiders get caught in the webs of other spiders?
Wasabi vs. Chili Peppers
A listener asks: Why does wasabi's kick disappear so quickly while the heat of chili peppers can …
Plant Gravity
A listener asks: Regardless of how you plant a seed, the roots always grow downward and the shoots …
Bloody Evidence
DNA is found inside the nucleus of a cell. But red blood cells have no nucleus, so a listener asks: …
Speedy Dolphins
A listener asks: Is it true that dolphins can swim as as fast as 20 miles per hour?