William Beaty has fun with dry ice

I found this video to be very entertaining.

Dry Ice is LEEEEEEATHALLY DAAAANGEROUS? - These bloopers are hilarious

William Beaty's site has tons of great stuff - http://www.amasci.com/

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Bill Beaty helped me understand transistors a lot better...not that I claim to UNDERSTAND transistors, but I have often turned to his site for help. He has some great van de graaf information as well.