The Effect of Sound on Sleep

A few years back, employees at the US Embassy in Cuba reported a strange and disquieting phenomenon. They complained of vertigo, nausea, hearing loss and more accompanied by a strange hum and whine that followed them into their homes. The State Department refused to comment on the cause of these symptoms even as they shipped employees back home to the States. However, some anonymous government officials stated that the employees fell victim to an unorthodox, top-secret, sound-based weapon. Could it be true? You can turn back now, or learn The Stuff They Don't Want You To Know.

They don't want you to read our book.: https://static.macmillan.com/static/fib/stuff-you-should-read/

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