Meet the beautiful moths that most people don’t even know exist. About the size of an eyelash, the Philodoria are some the world’s tiniest moths. To see their spectacular metallic wing patterns, a microscope or macro lens are needed.
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Using liquid nitrogen as fuel in a home made potato gun. The liquid nitrogen expands rapidly into gas as it is heated inside of the potato guns chamber, propelling the potato out of the barrel. ... Read More إقرأ المزيد | Share it now!

Neil deGrasse Tyson explains how his family deals with the Tooth Fairy.
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