Impress your family by watching these YouTube science documentaries (15 Photos)

With the year coming to an end, it means that you're going to be seeing your family more than usual, so why not bone up on some conversation topics that'll make you seem like the expert.  Here's some free and mind-blowing documentaries that you can find on YouTube, to make yourself the smartest person in the room.    You're welcome.

growing pot
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