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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SIX TRUTHS

Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

Truth #6: The only thing that can save us is…us.

Please take a moment to see how all these truths add up, because what happens in the weeks and months ahead will reverberate for at least a generation and we better be prepared.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

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