The United Nations will host an International Climate Summit in New York City this September.

The core goal for the summit is to “mobilize political will for an ambitious global legal agreement by 2015 that limits the world to a less than 2-degree Celsius rise in global temperature”.

In response, environmentalists of all stripes will take to the streets of New York on September 21st in what is being described as the largest climate march in history.

Last month, after meeting with U.N. Secretary-General Ban Ki-Moon, Mayor de Blasio made the following statement about the summit:

“We’re very excited that in September, the UN will host the climate change summit. A crucial moment for this world, literally one of the moments where we believe there’s an opportunity for real progress on what is arguably one of the most fundamental issues facing the entire globe.

The secretary-general has been such a strong voice, pushing nations of the world to grapple with this issue and take action. And we think the summit is a chance to propel that forward. New York City is honored to be hosting the event, honored to contribute to it in any way we can. And we hope to offer our own examples of what we’re doing in sustainability that we hope will be useful to cities around the world.”