Sunday, June 2, 2013

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10 unsolved historical mysteries

From forgotten languages to lost civilizations, here are 10 historical mysteries that remain unsolved.


The Most Alien Place On Earth?

The Socotra archipelago in the Arabian Sea supports so many diverse and unique species that it has been described as the most alien place on Earth. Hank takes you on a tour of this weird place in this episode of SciShow.

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