/u/vaginalextract's posts in /r/askscience
Can a skydiver survive without a parachute if he lands on water? If yes, why isn't it a common thing? If not, why?
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In Wildlife survival documentaries it's often said that river water could be a terrible idea to drink because of the possible infections we could get. And we must boil before. How did our ancestors drink it then before discovering fire?
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