If rules only
exist to be broken, then so do boundaries. After all, a boundary is just a rule
in space. Boundaries end up facilitating exchanges as much as blocking them,
and some of the most productive activities happen in their vicinity.

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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.