Was Intelligent Life a Fluke of Evolution?

How commonplace is intelligent life in our Universe? Looking at how it arose on Earth could provide clues.

3D rendering of a holographic human brain. Source: Pressmaster Production Studios, via Storyblocks.

Science fiction likes to explore different ways humans could interact with aliens. There are the Star Trek and Star Wars universes — where humans are just one species in a galactic civilization where we work, trade…

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