Researcher Elisabeth Gerster squats next to several cows in farmer Gerold Mohr’s barn. She and her team are studying the effects of different types of feed on the animals. Photo: dpa
When cow number 121 belches, scientist Elisabeth Gerster takes a very close look at her lunch.
The dairy cow is part of farmer Gerold Mohr’s herd. When she’s given concentrated feed, scientists measure how much methane the cow produces later.
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