Dr. Marci Howdyshell demonstrated how families can create safe, educational homemade lava lamps using household items at COSI.
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'Extraordinary!': The 8 strangest discoveries experts have ever made inside Chernobyl
From radiation-eating fungi to tanned frogs, scientists are making extraordinary discoveries in the ruins of the 1986 ...
No matter your budget, these gifts will actually get some serious use.
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