I'm a fan of practical, hands-on science. It shouldn't be something really smart people do in a futuristic lab. It's the democratically available magic of chemistry, thermodynamics and a bunch of other really long words that kind of take away from my point.
We found an experiment which is perfect for our winter weather. The temperature needs to be below minus twenty celsius for this to work.
Take a cup of boiling water outside.
Throw it up in the air as high as you can.
Watch it come down as snow.
I gave this slim chances but it actually worked. (And no one got scalded by boiling water.) Not all the water became snow but you could see the little ice bits sparkling down. And it made a nifty winter fog effect.
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