A journey inside the Internet's physical world

Listen to Andrew Blum talking about his book: "Tubes, A Journey to the Center of the Internet" in Fresh Air."In Tubes, journalist Andrew Blum goes on a journey inside the Internet's physical infrastructure to uncover the buildings and compounds where our data is stored and transmitted. Along the way, he documents the spaces where the Internet first started, and the people who've been working to make the Web what it is today."