This is Burj Khalifa, the tallest building in the world. This masterpiece in Dubai is twice the height of the U.S.'s Empire State Building and nearly three times the size of the Eiffel Tower. So, what if you took a tumble from the top? How could you slow your fall? Would anybody be able to catch you on the ground? Why does the G-force matter? What's terminal velocity?

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What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space, and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

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