Why Can't We See Evidence of Alien Life? [video] | GrrlScientist | Science | guardian.co.uk

Given the vast number of planets in the universe, many much older than Earth, why haven’t we yet seen obvious signs of alien life? The potential answers to this question are numerous and intriguing, alarming and hopeful.

…This thoughtful video provides a few ideas about silentium universi — the “silence of the universe”, which is another way to state Fermi’s famous question regarding the presence of intelligent life on other plants; “Where are they?”

via Why Can’t We See Evidence of Alien Life? | GrrlScientist | Science | guardian.co.uk.

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