Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Mar 31, 2009
In the 1800s cities used pneumatic tubes to transfer physical documents. Of course with the internet we no longer need these long tunnels, but that doesn't mean that they aren't fun to learn about how these old systems are similar to the internet. Molly Wright Steenson gave a great talk about how these systems worked and what was state of the art in the 1800's. Get Ignite in iTunes: http://bit.ly/ignite