Issue 31 of the Nautilus print edition combines some of the best content from our issues on Intelligence and Outbreak. It includes contributions from physicist Sabine Hossenfelder, radio producer Steve Paulson, and Gaia hypothesis originator James Lovelock, among others. This issue also features new illustrations by Jorge Colombo.

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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.