Many of us don't give much thought to the air that we breathe, but scientists from the University of Leicester are doing just that to learn how pollution affects us.
In a world-first experiment they've mapped the whole of the city by plane, to see how fumes and emissions are carried around. They hope the work will mean we can lead cleaner, healthier lives. Chris Halpin reports.
More top news
A mostly dry day but with a few showers, particularly during the evening.
A generally cloudy day, although some bright or sunny intervals are also likely.
A man from Northampton has found internet fame after a video of him failing to climb a wall on a Tough Mudder challenge went viral