
London during the Great Smog in 1952, N T Stobbs, Wikimedia.
Air pollution in Britain is a pervasive killer, but it is also intangible and silent. You can rarely see it, you can't always smell it, and it is unlikely you will ever hear it. It is even less likely that you will ever hear about it, particularly if you have tuned into any of the EU referendum debate.
If you have even a passing interest in securing a healthy environment for our children and our children's children, you might have reasonably expected the non-stop coverage of the debate to mention the environmental issues that pose such an acute and significant challenge to Britain, Europe and the world, including air pollution.