Thanks to the wonders of modern medicine, Charles Darwin isn’t getting the chance to do his job. A recent study led by Austrian researches found that an increasing number of babies must now be delivered by caesarean because their mother’s birth canals just aren’t wide enough for a natural birth.
The findings, published in the Proceedings of the National Academy of Sciences, suggest instances where babies can’t fit down the birth canal have gone from 30 in 1,000 births during the 1950s and 60s, to 36 in 1,000 births today.
While that kind of seems like a small increase, given the time frame we’re talking about here—only 50 years or so—in the context of our evolution as homo sapiens (100,000 years) it’s a huge-ass deal. And the researchers have chalked it up to evolution.