Fake moon landings, aliens and secret weapons; conspiracy theories about Area 51 abound but what exactly is it, and do we know anything about it with certainty? Dan is joined by Annie Jacobsen, investigative journalist and author of Area 51: An Uncensored History of America's Top Secret Military Base, to find out what really goes on in this mysterious Air Force installation. They discuss dirty bomb tests, nuclear explosions in space and soviet hoaxes.

Produced by Mariana Des Forges and James Hickmann, and edited by Dougal Patmore.

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