Why Is It?

DNA Heritage- rerun #2603

August 15, 2002

rerun

August 13, 2002

How do warm-weather animals survive cold weather zoos? (some adapt, and most are allowed to choose …

August 6, 2002

How come birds keep coming back to the same spot to try and build a nest, even though I keep undoing …

July 30, 2002

Why does your stomach get upset when you're nervous? (tension in stomach muscle, just like you can …

July 4, 2002

Why don't fire-eaters burn their mouths? (Saliva absorbs heat, use cool-burning fuel)

June 27, 2002

rerun

June 25, 2002

Why do crackers get soggy and bread gets crisp when they go stale? (Gluten absorbs or loses …

June 11, 2002

Can aluminum cause Alzheimer's disease? (current evidence says no)

May 30, 2002

Why do most humans see in color?

May 28, 2002

Is color blindness in your brain or in your eyes? - eyes (physically missing a set, pigment, of …