There is a growing recognition of the importance of really bringing pollution under control.

Everyone else has some interest in economic growth and development, which often happens at the expense of the environment and community. We need the other side to join this to check and balance.

I hope they can see that as a consumer, if they express themselves, they may make an impact and leverage their impact on the brands, and the brands can leverage their buying power on tens of thousands of polluters - suppliers - in China.

What we aim to do, through public pressure, is help the environment protection bureau to enforce the law.

The whole action around a carbon pricing mechanism, or carbon tax, is what you do with the money. Both France and Washington state proposed solving climate on the backs of workers. And that's a bad strategy.

A number of major companies - from PepsiCo to Walmart to U.P.S. - have recognized that corporations have a responsibility to address the causes of climate change before it is too late. We do not have to wait for an international treaty or new regulations to act.

Science changes, and it's odd to me that scientists say, 'Never be skeptical,' because it was in the mid-'70s when they were saying we're sunk because we're going to have global climate cooling.

For New Yorkers, late October 2012 was a moment when something fundamental altered. If there were any climate change deniers in the five boroughs before Hurricane Sandy, I don't think there were too many left afterward.