All posts tagged: lot of baby bumps

Humans Are Innovating Our Way Out of Baby Season

Humans Are Innovating Our Way Out of Baby Season

As the chair of the department of obstetrics and gynecology at UT Southwestern Medicine, Catherine Spong is used to seeing a lot of baby bumps. But through her decades of practice, she’s been fascinated by a different kind of bump: Year after year after year, she and her colleagues deliver a deluge of babies from June through September, as much as a 10 percent increase in monthly rates over what they see from February through April. “We call it the summer surge,” Spong told me. Her hospital isn’t alone in this trend. For decades, demographers have documented a lift in American births in late summer, and a trough in the spring. I see it myself in my own corner of the world: In the past several weeks, the hospital across the street from me has become a revolving door of new parents and infants. When David Lam, an economist at the University of Michigan who helped pioneer several early U.S. studies on seasonal patterns of fertility, first analyzed his data decades ago, “we were kind …