Saturday 4 November is the global day of action against climate change.
There will be demonstrations in Australia, New Zealand, the Philippines, South Korea, Taiwan, Bangladesh, South Africa, Kenya, Argentina, Bolivia, Peru, Guatemala, Costa Rica, the US, Canada, and 20 countries in Europe.
In London many thousands will join the Campaign Against Climate Change rally at the US Embassy in Grosvenor Square, W1, at 12 noon.
At 1pm we will march down to join the Stop Climate Chaos rally in Trafalgar Square.
Both rallies are part of the same fight.
The rally at the embassy is demanding a strong and effective international treaty after Kyoto to limit carbon emissions.
The rally in Trafalgar Square is for strong and effective laws in this country.
Coaches are coming from all over the country. December last year saw the first global demonstrations over climate change.
Ten thousand marched in London, and about 60,000 in 20 other countries.
This year will be bigger. The tide of public opinion is changing. People saw what happened with the floods in New Orleans last year. Al Gore’s brilliant film An Inconvenient Truth lays out an unanswerable case.
Every week the scientific journals and the newspapers report new evidence that climate change is accelerating.
Every politician but George Bush is now saying we must stop the threat of global warming.
Tony Blair, David Miliband, David Cameron, Angela Merkl, and Arnold Schwarzenegger are falling over each other to give speeches and make promises.
But words are not action. The governments of the world do not want to spend the money.
They do not want great public programmes for alternative energy, building insulation, public transport and regulating industry.
They do not want to take on the oil companies.
They talk about carbon emission cuts of 5 to 20 percent.
We need 90 percent cuts in the rich countries.
The people of the world will have to force the politicians to act, or replace them with ones who will.
This means mass mobilisation from below. Saturday 4 November is a start at that, but only a start.
The global demonstrations will not be huge. But in every country, they will be the largest demonstration ever about climate change.