Experts said the slow digestive system of cows makes them a key producer of methane, a potent greenhouse gas that gets far less public attention than carbon dioxide.
In a bid to understand the impact of the wind produced by cows on global warming, scientists collected gas from their stomachs in plastic tanks attached to their backs.
The Argentine researchers discovered methane from cows accounts for more than 30 per cent of the country's total greenhouse emissions.
Before you start banning cows remember that Argentina has about 49,000,000 cows and 7,000,000 automobiles.
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