Cassette

Rolling Eyes

April 10, 2003

Why do our eyes roll back when we sleep? (They don't, really; they move all around.)

April 9, 2003

rerun

April 8, 2003

Why is the Earth tilted? (Got knocked around as it was forming billions of years ago)

April 7, 2003

Physically fit senior citizens retain more brain volume as they age.

April 4, 2003

Sleep deprivation hurts cognitive ability, even if you don't feel sleepy.

April 3, 2003

Why do people have different blood types? (Different molecules on the surface of red cells)

April 2, 2003

The hormone estrogen makes women less sensitive to pain.

April 1, 2003

Does a bigger head mean a bigger brain? (Generally, but it doesn't mean you're smarter.)

March 31, 2003

Mother ptarmigans teach their chicks to what foods to eat by calling to them.

March 28, 2003

Atlantic salmon can escape from Pacific fish farms, vitamin D prevents bone fractures, and organic …

March 26, 2003

The toxin from E. coli that causes diarrhea may help prevent colon cancer.

March 25, 2003

Using a fake language to figure out how babies learn words