This song covers Darwin, Australopithecus, and Carbon-14 dating -- all to the tune of Britney Spears' song "Toxic."
See more fantastic music video lessons (mostly history) at the historyteachers' YouTube Channel
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For every gallon of sea water, you get more than a quarter pound of salt.
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
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