Hamburger’s environmental impact not easy to track

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Burgers are getting more complicated by the day. They aren’t just cookout food any more. They’re quickly becoming symbols of both overconsumption and the wastefulness of Americans’ food choices.

But measuring their exact impact isn’t easy, and hinges on a number of complicated factors. Even knowing how much a farm feeds a cow before slaughter isn’t easy.

See the story at NPR.