Where have all the real
heroes gone? It’s a refrain you find in articles on our celebrity culture,
movie reviews wondering why modern superheroes need to be so flawed, and in our
own private conversations.

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Space Colonization and the Meaning of Life
Colonizing the galaxy is the highest good humanity could achieve.
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The Surprising Importance of Stratospheric Life
The science of bacteria in the atmosphere is getting its moment in the sun.