NPR KUNC: At first glance, the livestock pens at Colorado State University’s AgNext program are a lot like your standard cattle feedlot. There are cows, plenty of mud underfoot and, of course, the ever-present stench. But this operation isn’t just a feedlot. It’s a scientific laboratory where researchers are learning about the greenhouse gases cows produce as they stand around digesting food. It’s tricked out with millions of dollars of equipment, like this GreenFeed contraption – a kind of high-tech gumball machine dispensing tasty cow treats.

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