Babies: They're adorable, but they aren't the best for the environment.
A new analysis published in Environmental Research Letters says having one less kid is over 24 times more effective at cutting carbon emissions than the second best option — getting rid of your car.
Having one less child would cut an individual's carbon emissions by 58 metric tons per year of their life. To put that in perspective, living car-free would reduce someone's emissions by 2.4 metric tons per year.
It's the single best way for individuals to fight climate change, but it's not one that gets talked about often.
The paper says the U.S. and other developed nations tend to recommend less effective actions that only have a low-to-moderate impact on emissions — things like recycling or upgrading your lightbulbs.
The researchers involved don't think people should abandon those smaller efforts. They just want governments to address the larger factors, too.
Although thousands of mayors worldwide, including 130 from the U.S., are still committed to the goals of the Paris accord, it may be a good time to focus on individual efforts to reduce global warming.
The research team knows the idea of limiting offspring can be unpopular. One member said: “We recognize these are deeply personal choices. But we can’t ignore the climate effect our lifestyle actually has. It is our job as scientists to honestly report the data."
The U.S. emits the highest amount of carbon per person in the world, and the second highest as a country, behind China.