Scientific American 319, 94 (2018). doi:10.1038/scientificamerican0918-94
Author: John Gribbin
Why we are probably the only intelligent life in the galaxy
from Scientific American - nature.com science feeds https://ift.tt/2nFj7Sb
Alone in the Milky Way
from Scientific American - nature.com science feeds https://ift.tt/2nFj7Sb
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