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Why do fingers become pruney when they get wet Likely for the same reasons that tires have treads. Mark Changizi exami...One day Ed Gavagan was sitting on the subway watching two young med students practicing their knots. And a powerful memory washed over hi...View full lesson
It isnt easy holding complex sentences together just ask a conjunction or a subordinate but the clever little comma ca...View full lesson
The older the word the longer and more fascinating the story. With roots in Old English true shares etymological ances...View full lesson
Andrew Jackson was both beloved and loathed during his presidency. In this imaginary courtroom you get to be the jur...View full lesson
A white puffy dress. Eternal love. A joint tax return. Marriage means something different to everyone and has changed ...View full lesson
Vladimir Lenin overthrew Russian Czar Nicholas II and founded the Soviet Union forever changing the course of Russian ...