Why Is It?
Tanning Beds
A listener asks: Is artificial tanning better than baking in the sun?
Brain Divide
A listener asks: Why does each half of the brain control the opposite side of the body?
Insects in Winter
A listener asks: Where do all the insects go in winter?
Vestigial Organs
Believe it or not, our bodies have parts that don't have any use.
Human Roundup
What would it be like to live in a zoo? A few people in Australia are getting a chance to find out.
The Vestigial Appendix
A listener asks: Does the appendix have a purpose?
Cell Phones and Health
A listener asks: What's the effect of wireless devices on our health?
Blood Donor Bonus
Giving blood can make you feel good about yourself. But could it be good for you, too?