Over 100 school heads write to Sadiq

Headteachers, Greenpeace, Sadiq Khan and - most of all - children met Sadiq today to join the campaign for #cleanairnow 

Why are London's kids campaigning? They tell it beautifully in their own words: https://vimeo.com/72040485 - do share this, and I think I heard it right, one of them is going to rule the world and ban cars. There you go, sorted.

Whole story in today's media such as this: http://www.dailymail.co.uk/wires/pa/article-4151480/Hundreds-London-schools-help-tackle-threat-filthy-air.html

And this on a day when Londoners are being advised to avoid exercising outdoors. Seriously. We're being advised to breathe less. In more enlightened places dirty cars are told to drive less. More from me later if I survive my lunchtime jog.