The United Nations has announced that up to 155 countries, including the United States, are planning to sign the Paris Climate Agreement at the Ceremony for Opening Signature, on Earth Day, April 22, 2016. The ceremony will take place at UN headquarters in New York. With over 150 world leaders set to sign the Paris Climate Agreement, the signing is expected to be the largest single signing of an international agreement in world history.

For more information about the signing ceremony and the Paris Climate Agreement, visit the United Nations Framework Convention on Climate Change website.