WASHINGTON (AP) — New York will be at the epicenter of the climate change debate next week. More than 120 world leaders will attend a one-day summit on Tuesday at the United Nations on climate. Tens of thousands are expected to march to call for action on global warming. Dozens of other events are planned throughout the city as part of Climate Week NYC. Here are 5 things you need to know:

1. THE SUMMIT IS NOT PART OF THE FORMAL NEGOTIATION PROCESS FOR A NEW TREATY. The one-day summit was organized by U.N. Secretary General Ban Ki-Moon as a way to galvanize political momentum for a new international treaty, but it falls outside the formal negotiation process under the United Nations Framework Convention on Climate Change. The last negotiations failed to produce a binding agreement in Copenhagen in 2009. The goal is for the world to agree to a new deal at the end of 2015 at a meeting in Paris.