Look into the eyes of this methane machine.
Look into the eyes of this methane machine. - 
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Today's word of the day: eructation, a technical way of saying "burp."

Why did Marketplace devote the final 30 seconds of our show to burps?

Because of the Environmental Protection Agency, which is out with a new report on methane gas emissions in this country. The biggest source, you may or may not be surprised to find out, is not the natural gas drilling business, but rather the cattle industry.

Think about it for a second. 

Hence... eructation. Belching cows. Or "bovine eructation," to be precise.

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Follow Kai Ryssdal at @kairyssdal