Squirrels live longer in leafier parts of London, air pollution study shows

The closer the rodents live to the centre of the city, the worse their symptoms of lung disease

Deteriorating air quality is a major threat to health, and scientists have discovered that humans are not the only ones in danger.

Grey squirrels suffer worsening lung damage the closer they live to the centre of a city, according to a study in London. It found the lungs of the rodent residents of Richmond fare far better than those of central Westminster.