Uploaded July 2014 | Updated September 2026, 1 week ago

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Step into the information elevator with Julie Douglas from Stuff to Blow Your Mind as she faces her doppelgänger. Could an exact physical (non-twin) match of you exist? Would a portal open to another universe if you met?

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I hope that you'll join me on the elevator and hurl through time and space as we explore themes like atomic collapse and humans smelling humans, all while accompanied by delicious HowStuffWorks staff members. Yes, that's right. Delicious.