We are running out of time. The United Nations climate change conference in December will be the turning point in the fight for a safe climate. But even before the conference, Barack Obama and the leaders of some other large nations have announced that they aren't going to reach any kind of legally binding climate agreement in Copenhagen--declaring that they need more time, despite the five years of preparation they've already had.

That's sad and it's dangerous--the planet is running out of 'next years'. But it does give all of us more time to organize a movement to make them respect the science.

So it's time for the next big steps. The world needs your help once more.

There's a global mobilization coming together for the weekend in the middle of the Copenhagen conference--Dec. 11-13. Our collective message? "The World Wants a Real Deal" -- people all over the planet are demanding a binding global climate agreement guided by the latest science and built upon principles of justice and equity.

Here in Boston, we will assemble for a candlelight vigil in Cardinal Cushing Park, next to Senator John Kerry's office.

John Kerry is leading the US delegation to the climate convention in Copenhagen. Our goal is to focus his attention urgent need for a science-based international climate treaty and climate legislation in the U.S. that gets us back to atmospheric CO2 concentrations of less than 350ppm. We will stand in solemn solidarity with the citizens of those nations who will be the first to face challenges to their very survival.