How best to study cow burps?

We have covered some serious subjects over the past few weeks, so I thought this time I would talk about something a little bit more light-hearted, at least on the face of it.

Back in January of this year, there were reports from Germany of an explosion – a herd of cows nearly took the roof off their barn because of the amount of methane they were releasing, when a static electric charge caused it to explode. The blast damaged the roof of the barn and one cow (out of about 90) received minor burns.

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