Stuff They Don't Want You to Know
Ancient Machines | CLASSIC
The Baghdad batteries and the Antikythera mechanism have puzzled many historians -- they just appear too advanced for their time. Where did they come from?
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Stuff They Don't Want You to Know: The Battle of Los Angeles
In the early hours of February 25th, 1942, air raid sirens resounded across Los Angeles, California. The military fired roughly 1500 anti-aircraft machine gun rounds and artillery shells at some unknown object in the sky. So what really happened?