Renowned astrophysicist and StarTalk Radio host Neil deGrasse Tyson has some pretty wild ideas for how we should improve the human body, but he turns serious as he explains how we should appreciate the fragility and finiteness of life.

Produced by Kamelia Angelova, Will Wei, & Alana Kakoyiannis

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StarTalk Radio is a podcast and radio program hosted by astrophysicist Neil deGrasse Tyson, where comic co-hosts, guest celebrities and scientists discuss astronomy, physics, and everything else about life in the universe. Follow StarTalk Radio on Twitter, and watch StarTalk Radio "Behind the Scenes" on YouTube.