This weekend world leaders will convene at the United Nations for a landmark summit on the climate crisis. But the summit isn’t the biggest news—on Sunday, just outside the doors of the UN, thousands of people will add their voices to the debate by joining what’s expected to be the largest Climate March in history. The People’s Climate March will bring people of all stripes together to peacefully flood the streets of New York. Together, the marchers will make their way through Manhattan, taking a collective stand for the kind of world we all want to live in. In addition to the businesses, unions, schools, and church groups marching for change, many local Meetups will be participating.