Male birth control breakthrough safely switches off fit sperm for a while

boem@lemmy.world to Technology@lemmy.world – 869 points –
Male birth control breakthrough safely switches off fit sperm for a while
newatlas.com
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We had sex ed but we never went really deep.

Let me put it this way, with an imperfect analogy. If you poison the water supply, it doesn't matter how many people drink from it. They all die.