To figure out this mind-bogglingly high number, we need to know how many species have ever lived, dig deep into the fossil record and do a lot of math.
from Livescience https://ift.tt/DQzqRpJ
from Livescience https://ift.tt/DQzqRpJ
For the precocious hunter of off-Earth life, the Drake equation is the ever-ready, go-to toolkit for estimating just how (not) lonely humans are in the Milky Way galaxy. But it's not useful. from Live Science http://bit.ly/2T8L56y
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