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The Academy of Natural Sciences is hosting the annual George Washington Carver Science Fair, which is featuring more than 225 elementary school entries.
It's one of the largest fairs of its kind, promoting scientific inquiry and discovery through experiments that the students research and conduct themselves. Eleven-year-old Akosua Adubofour (center in photo) is a fifth grader at the John McCloskey School in the Mount Airy neighborhood of Philadelphia. She tested how long strawberries would last outside the refrigerator:
"I left it out for seven days. Eventually, they grew mold and mold hair and everything."Jacara - her 10-year-old classmate (far left in photo) - found out whether cheap or expensive nail polish was better:
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