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Why now is such a cool time to be alive | Chris Hadfield

What does it take to be chosen by NASA to fly to space? Astronaut Chris Hadfield explains the path to becoming a space-farer and what you can do with all the knowledge you gain once your flying days are over.…

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Self-healing DNA may protect astronauts from killer radiation | Michelle Thaller

Read more at BigThink.com: Follow Big Think here: YouTube: http://goo.gl/CPTsV5 Facebook: https://www.facebook.com/BigThinkdotcom Twitter: https://twitter.com/bigthink Michelle Thaller: So Peter, you ask a really good question about radiation perhaps being a limiting factor in human exploration. And honestly this is something that…