A daylong Earth Day concert complete with Fall Out Boy, Usher, No Doubt, Train, Gwen Stefani, countless other bands and several celebrity appearances including Harry Potter star Bonnie Wright, Global Citizen 2015 Earth Day rallied thousands to the National Mall on April 18 for political action to confront both climate change

The event, hosted by will.i.am and Soledad O’Brien, was a join initiative of the Global Poverty Project and Earth Day Network and coincides with meetings at the World Bank and International Monetary Fund regarding the issues of poverty and climate change.

In addition to poverty and climate change, the rally also touched on global health and development needs both within the United States and abroad. The United States Agency for International Development announced from the stage, in front of the thousands of onlookers, that it will commit $126 million to rebuild West African health care systems that were broken by the Ebola outbreak in the region. This will add onto the $1.4 billion that the United States government has already spent on the crisis to support over 10,000 humanitarian responders.

Even though Earth Day is officially April 22, this rally urged the participants, to sign petitions for a United Nations conference on climate change planned for Paris this coming December. Organizers also urged both those on stage and those in the audience to commit to taking parts in actions that will help the world go green over the next few weeks and into the future.