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
Mostly dry and cloudy, with rain later.
Fog and light rain across the hills. Drier elsewhere. Mild.
The makers of US TV hit Glee have been given permission to mount a challenge against Midlands comedy club franchise The Glee Club.