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What Causes Auroras?
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Auroras are quite stunning to behold, but why and how do they happen? Learn what makes these phenomenal wonders of the sky possible in today’s video from SciShow!
What Causes Auroras? [YouTube]
Akemi Iwaya (Asian Angel) is our very own Firefox Fangirl who enjoys working with multiple browsers and loves 'old school' role-playing games. Visit her on Twitter and Google+.
Modern U.S. pennies are no longer copper, but are in fact 97.5% zinc with a copper plating on top.
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