Study: Want to stop climate change? Don’t have another kid. Or a car. Or meat.

People who care about the planet shouldn’t be planning to have another child, according to a study published Wednesday.

“If you care at all about our planet, you’ll have fewer children,” Pat Gray sarcastically explained on Thursday’s “Pat & Stu.”

The Environmental Research Letters study recommended four “high-impact” actions that people can take to reduce their greenhouse gas emissions, but having one fewer child is the biggest, saving 58.6 tons of CO2 emissions per year, the Guardian reported. The three other actions explored in the study are getting rid of your car, avoiding long airplane flights and becoming a vegetarian.

“We recognize these are deeply personal choices. But we can’t ignore the climate effect our lifestyle actually has,” researcher Kimberly Nicholas told the Guardian.

Stu Burguiere pointed out that environmentalists always seem to want people to give up the things they care about the most, whether it’s something as important as having a child or simply enjoying a vacation. To supposedly stop climate change, advocates think people should give up everything from big-screen TVs to air conditioning to airplane flights.

To see more from Pat & Stu, visit their channel on TheBlaze and listen live to “Pat & Stu” with Pat Gray, Stu Burguiere and Jeffy Fisher weekdays 5–7 p.m. ET, only on TheBlaze Radio Network.