Neil DeGrasse Tyson made a lot of people (and presumably ducks, cats and bedbugs) angry with a much less than true fact about sex and evolution. His claim, that sex doesn't hurt any species had many Twitter users jumping to correct him.
via @RachelFeltman, @SciPhile, @ClaireConnelly, @carlzimmer, @DreadMorgan
And you might be thinking, he's just trying to be positive about human sexuality and say, in his own pseudoscientific way that it's healthy and painless for humans. But... that's actually not true either:
via @DebbyHerbenick, @mikamckinnon
Sure, he's a scientist but cut him some slack, he's not that kind of scientist. He studied astrophysics, how's he supposed to check his facts at all before Tweeting about biology?