Another protest, another climate conference - will this time be any different?
Well, the marches brought more people on to the streets than ever before, partly thanks to the organisational power of the e-campaign group Avaaz.
And the climate talks will also be influenced by technology, as it was reported this week that the sun and wind can often generate power as cheaply as gas in the home of fossil fuels, Texas.
Certainly the UN's Secretary General, Ban Ki Moon, hopes that he can make a fresh start in the endless blame-your-neighbour round of climate talks.
Next year world leaders are due to show up in Paris to settle a global climate deal based not on a bitterly-contested chiselling negotiation in the middle of the night, but on open co-operative offers of action to tackle a shared problem.
Mr Ban has invited leaders to New York to make their offers public. Some small nations will doubtless make new contributions to the carbon contraction effort as they realise the vulnerability of their own economies to a hotter world.
But some big players may continue the game of climate poker, holding back their offers until they see what else is on the table.
So there is no guarantee that Ban's idea will work - but at least for weary climate politics watchers it will be a change.