Why Is It?

Upright Earth

March 22, 2007

A listener asks: What would Earth be like if it didn't tilt?

March 15, 2007

A listener asks: Why are rainbows round?

March 8, 2007

A listener asks: How do amoebas move, anyway?

February 27, 2007

A listener asks: Why does each half of the brain control the opposite side of the body?

February 13, 2007

A listener asks: Where do all the insects go in winter?

February 8, 2007

Believe it or not, our bodies have parts that don't have any use.

January 30, 2007

A listener asks: Does the appendix have a purpose?

January 24, 2007

A listener asks: What's the effect of wireless devices on our health?

January 16, 2007

Giving blood can make you feel good about yourself. But could it be good for you, too?