The two 496-foot-tall WNP-3 and WNP-5 cooling towers of the abandoned Washington ... “The room’s background noise at 1000Hz is an astounding -43dB!” Meanwhile, the lab also features anechoic ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. An abandoned mine has reopened its doors–not for miners, but for ...