Watch this new Diet Coke and Mentos experiment, meant to imitate the fountains at the Bellagio in Las Vegas.
Sometimes fun and wacky stuff is also intelligent. So, after you watch their expeiment with 101 2-liter Diet Coke bottles and Mentos, listen to their interview on NPR and then learn how the science works.
If you haven't seen it before, you must take a few minutes. It reminds me of a more geeky version of the Blue Man Group, also in Las Vegas.
I am keeping this demonstration in my back pocket for my son when he gets a little older, it beats the tired old volcano experiment.