Inside the worlds quietest room

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=aa_1Galj3nI

An anechoic chamber in Minneapolis's Orfield Laboratory holds the Guinness world record for the world's quietest place at -9.4 decibels. As humans can only d...

Minneapolis, Orfield Laboratory, Guinness world record, Minnesota, invention, health
#############################