Kurzgesagt - In a Nutshell

Season 6, Episode 7

Episode Title: The Deadliest Being on Planet Earth — The Bacteriophage

Air Date: 2018-05-13

Overview:

A war has been raging for billions of years, killing trillions every single day, while we don’t even notice. This war involves the single deadliest being on our planet: the bacteriophage.