Invisible air pollution affects all of us, and with Clean Air Day coming up we're being asked to step up to deal with one source of polluted air.

And we hear from the Rothamsted Research scientist using her loaf to make our bread healthier.

You can find out about the air quality near you at www.addresspollution.org

To register your interest or find out more about air pollution busting action on Clean Air Day email Helen Burridge on [email protected]