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I took this shot at Rattlesnake Springs in New Mexico. Although it was nearly 10:00 AM on this cloudy day, hundreds of vultures where still roosting in the trees. What were they waiting for?

Melting Icebergs

This week's experiment comes from a report I recently heard on National Public Radio. Unfortunately, I was driving and could not write down the fellow's name, so I could give him proper credit. He was talking about the facts and fictions of global warming. One point that he mentioned was one that I had heard many times and had never thought all the way through. What would happen if the global temperature rose enough for the polar ice caps to melt? All of that extra water would cause worldwide flooding, right? Lets investigate. You will need:

Hot Air Bottle

This experiment is a simple one that I came across while washing dishes. Even thought it was an accidental thing, it really is a great way to show how much air expands when it gets hot. To try it, you will need:

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