None of the great changes in our history have come without popular pressure, and action to tackle climate change will be no different. In the few days we have left before the Copenhagen climate talks it is vital that people and campaigners from all walks of life act at home and abroad to help build the momentum we need to get the right deal for the planet.
So what are you doing next Saturday? Why now join thousands of people in central London - for the UK's biggest ever climate demonstration - as we demand that political leaders commit to a fair and robust climate deal in Copenhagen that puts the world's poor at its heart.
Assembly & rally: 12.00pm, Grosvenor Square
March sets off 1.00pm (please see route below)
Climax: 3.00pm Encircling of Parliament
Dress code: Blue! Please bring blue gloves if you have them, or paint your hands blue for the 3.00pm climax!
Lots more info is available from the Stop Climate Chaos Coalition.
I've volunteered to help steward and will be at the huge ecumenical service at Methodist Central Hall which will begin at 11.00am and will be led by Archbishops Rowan Williams and Vincent Nichols before I join the march.