Add Yahoo as a preferred source to see more of our stories on Google. Their various channels, including "Crash Course" and "Sci Show," have amassed over 32 million subscribers Their overarching media ...

NEW YORK (AP) — Author-vloggers Hank and John Green often end their popular “Crash Course” videos with a donation appeal to keep the YouTube show “free for everyone forever.” The multihyphenate ...

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For over a decade, Hank and John Green have been helping students around the world pass their tests by breaking down everything from biology to history in entertaining yet accurate ways. That was ...