Cows belch a lot of methane, a potent greenhouse gas. But it’s not their fault. Scientists have identified a new trigger for the process. It resides in some microbes that live in the cows’ guts.
This tiny organelle appears to help control how much of this greenhouse gas the cows burp out.
@scientificamerican
Notoriously, cows burps are rather potent — a single cow can burp out as much as 220 pounds of methane a year. And scientists just identified the special structure inside microbes in their gut that is responsible for all that methane. It’s called a hydrogenobody. Read more at the 
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