International popstars are in talks for a new series of concerts around the globe that aim to help bring awareness to the latest threat to the climate: cows.

Turns out the leather-clad milk producers are responsible for three per cent of the UK's greenhouse gas production, and it's all down to their gaseous expulsions.

Scientists in Wales have found cows, and those woolly troublemaking sheep, produce as much as 500 litres of methane per day - without even turning a key or doing any sort of burnout.

It's a problem, because methane is one of the most harmful greenhouse gases.

Several solutions have been put forward, including a creative use for use wine corks.

However, the whole issue could be tackled by feeding the cows and sheep garlic. Not a vain attempt to pre-marinade the meat (which would be nice), but an effort to reduce flatulence; garlic has been known to be an effective herbal antiflatulent.

The good news for motorists is that the average cow produces more greenhouse gases than a small car being driven 50 miles per day, which means that before environmentals start shouting at you, they have to slaughter lots of doe-eyed animals.

Save the planet? Kill the cows.