No, not from The Onion.

Via Bloomberg:

Climate change has been blamed for many things over the years. Never, until now, has anyone thought it was possible to see it as a kind of contraceptive.

Hot weather leads to diminished “coital frequency,” according to a new working paper put out by the National Bureau of Economic Research. Three economists studied 80 years of U.S. fertility and temperature data and found that when it’s hotter than 80 degrees F, a large decline in births follows within 10 months. Would-be parents tend not to make up for lost time in subsequent, cooler months.

An extra “hot day” (the economists use quotation marks with the phrase) leads to a 0.4 percent drop in birth rates nine months later, or 1,165 fewer deliveries across the U.S. A rebound in subsequent months makes up just 32 percent of the gap.

The researchers, who hail from Tulane University, the University of California-Santa Barbara, and the University of Central Florida, believe that their findings give policymakers three major things to think about. […]

The paper’s title is about as lascivious as the National Bureau of Economic Research gets: “Maybe Next Month? Temperature Shocks, Climate Change, and Dynamic Adjustments in Birth Rates.” The researchers assume that climate change will proceed according to the most severe scenarios, with no substantial efforts to reduce emissions. The scenario they use projects that from 2070 to 2099, the U.S. may have 64 more days above 80F than in the baseline period from 1990 to 2002, which had 31. The result? The U.S. may see a 2.6 percent decline in its birth rate, or 107,000 fewer deliveries a year.