New Uses for Sheep Urine

It sounds bizarre, but it’s true – sheep urine is the latest weapon in the fight against vehicle pollution according to this story in today’s Guardian.

A bus company is trialling a scheme whereby urea – the end product of refining sheep urine – is stored in a tank on a bus, and then sprayed into the exhaust system. The urea reacts with the nitrous oxides in the exhaust fumes to produce nitrogen and water.

It actually sounds like a really clever idea. I hope it works.