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Why Do Bridges Freeze Before Roads?
A cold front moved into Wonderopolis overnight. Better watch out for ice today!
Why Do Bridges Freeze Before Roads?
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Why Is Ice Slippery?
Skate on over to Wonderopolis today for a Wonder that’s really slick!
Why Is Ice Slippery?
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Why Is Sand or Salt Put On Roads When It Snows?
You may want to take today’s Wonder of the Day with a grain of salt. It won’t break the ice, but it will melt it!
Why Is Sand or Salt Put On Roads When It Snows?