Scientists Hooked Up an Inflatable Bag to a Cow Stomach. The Timelapse Video Is Insane.

Now we can finally see just how gassy these beasts really are.

Specialty belch-backpacks help show just how much methane cows produce every day.Discovery

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Cows are gassy beasts. And this gas is bad for the planet. Last year, my colleague Josh Harkinson detailed just how dangerous this gas has become in our atmosphere:

Cows are already the nation’s single largest source of methane, a greenhouse gas produced by oil extraction, decomposing trash, and the guts of grazing animals that’s as much as 105 times more potent than carbon dioxide. A single cow farts and belches enough methane to match the carbon equivalent of the average car. According to a 2006 United Nations Food and Agriculture Organization report, the world’s 1.4 billion cows produce 18 percent of the world’s greenhouse gases—more than the entire transportation sector.

Our hunger for beef is a big problem for the climate: More cows, more methane, faster warming. Now we have a sensational new visual way to understand exactly how much methane we’re talking about, thanks to a new documentary called Racing Extinction, which airs on Discovery Channel Wednesday night in 220 countries and territories around the world—a date designed to coincide with the early days of the high-stakes UN climate summit, where diplomats are attempting to forge a new global deal to limit greenhouse gas emissions.

To measure just how much a single cow emits every day, scientists at the National Institute of Agricultural Technology hooked up inflatable plastic bags to cows’ stomachs. Then they fed them. And then, they watched the methane bags inflate. Check out the time-lapse:

Look, they even have special belch-backpacks:

Watch the entire fascinating segment below, courtesy of Discovery. And check out the documentary Wednesday night, at 9 pm ET:

More MotherJones reporting on Climate Desk

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We didn't know what to expect when we told you we needed to raise $400,000 before our fiscal year closed on June 30, and we're thrilled to report that our incredible community of readers contributed some $415,000 to help us keep charging as hard as we can during this crazy year.

You just sent an incredible message: that quality journalism doesn't have to answer to advertisers, billionaires, or hedge funds; that newsrooms can eke out an existence thanks primarily to the generosity of its readers. That's so powerful. Especially during what's been called a "media extinction event" when those looking to make a profit from the news pull back, the Mother Jones community steps in.

The months and years ahead won't be easy. Far from it. But there's no one we'd rather face the big challenges with than you, our committed and passionate readers, and our team of fearless reporters who show up every day.

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