On Sunday, September 21, QUNO staff from New York and Geneva joined in the People's Climate March, which brought an estimated 400,000 people to the streets of New York to voice their concerns and walk in solidarity with the communities who are most affected by climate change, in advance of the UN Climate Summit.  QUNO and other Quaker organizations are actively working on the margins of the Climate Summit, calling "on our leaders to make the radical decisions needed to create a fair, sufficient and effective international climate change agreement."