Backpack-wearing pigeons helping fight air pollution

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LONDON, ENGLAND - Nearly 30,000 people die from air pollution each year in the UK and a team of researchers in London are hoping their three-day experiment can help combat the growing problem.

A group of pigeons dubbed the Pigeon Air Patrol are strapped with little backpacks filled with sensors that are collecting all kinds of data around the city. The sensors measure the ozone, volatile compounds and nitrogen dioxide.

A live map brands areas of London with a fresh, moderate, high, very high or extreme rating. The air patrol's Twitter account will even give you a personal analysis of your area if you request one. If the three-day experiment goes well, pigeons in the UK may be busy year round.