Sound How We Got to Now : Season 1 Episode 6
TV-PG PBS 6h 00m
Aired: November 12th, 2014 @ 10:00 PM EST on PBS
30,000 year old traces of a desire to record sound are located in caves, how radio influenced the civil rights movement, the weapon that laid the ground work for today's mobile phones, and the role of the ultrasound in modern medicine.
