Why Is It?

Flash-Free Fireflies, rerun #2446

May 17, 2001

rerun

May 15, 2001

My ice cubes evaporate and leave a particulate behind-- what is it? (calcium carbonate, chalk, …

May 8, 2001

Why is music pleasureable? (because it may help us learn better, in the end, helping us survive)

May 1, 2001

Why is your hearing dull or muffled after a loud concert? (because there's some damage after …

April 26, 2001

How are daily calorie requirements calculated? (Using a formula or by measuring metabolic rate)

April 17, 2001

Why can't you treat cancer with a cancer vaccine? (Researchers are working on treatments.)

April 12, 2001

Are calories in food counted with a calorimeter? (not really, conversion factors are used)

April 10, 2001

Why is fire hot? (a rapid chemical reaction releases a lot of energy and heat)

April 5, 2001

Why don't the different gases in atmosphere separate into layers? (wind keeps them mixed)

April 3, 2001

Is it possible to have better than 20/20 vision? (yes, but it's limited by corneal aberrations)