Contributor(s): Andrew Blum | The internet is not some abstract "cloud" of connectivity - it exists in tubes - on the ground and under the sea. Andrew Blum explains how the internet exists in the real world and makes the case for why we all need to understand this. This event celebrates the publication of Tubes: Behind the Scenes at the Internet. Andrew Blum is a correspondent at Wired (U.S.) magazine whose work has appeared in numerous publications, including the New Yorker, The Atlantic, and The New York Times.