“Understanding the Inventions That Changed the World” S:1 E:31 Satellites and Cell Phones

S:1 E:31 Satellites and Cell Phones We all have cell phones, but how many of us know how they actually work? Visit the world of communications satellites, radio towers, and mobile networks. You’ll take an in-depth look at how bandwidth, infrastructure, and competition between companies like Motorola and AT&T have allowed for truly global communications.