How Far Can We Go? Limits of Humanity.

Use the URL: http://www.squarespace.com/nutshell for 10% with a new website and support this channel. Also make your life easier. Thanks a lot to Squarespace for supporting the show! Check out Ethan Siegels Astronomy blog, "starts with a bang": http://onforb.es/1THyMGTIs there a border we will neve

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