Neil Young, Mumford & Sons, Florence and the Machine and Duran Duran have been added to the “24 Hours of Reality and Live Earth: The World is Watching” event, slated to kick off at noon today.

The 24-hour event aims to advocate for climate action ahead of the UN Climate Change Conference in Paris. The broadcast will begin in Cape Town and move to cities like Miami, Calgary, Sydney, Rio de Janeiro, Manila, Beijing and New Delhi. There will also be musical peformances aired throughout the broadcast, with additional acts like Pharrell, Elton John, Hozier, Bon Jovi, Walk the Moon, Thirty Seconds to Mars and Fall Out Boy also slated to appear.

To stream the event, click here.