“a nontoxic polymer that forms a coating on the inside of the vas. As sperm flow past, they are chemically incapacitated, rendering them unable to fertilize an egg.”
Pretty interesting, very cringe inducing, and watch out for that pic two thirds through if your at all squeamish about surgery! Don’t know how I feel in general with messing with out bodies like this but we do have over population problems. I’ve always said we should have to get a licence to have kids. It’s over stepping boundaries I know but this might actually be viable!