NEW YORK (AP) — Post Malone and Doja Cat, two of pop music’s biggest stars, will headline this year’s Global Citizen Festival in New York’s Central Park on Sept. 28, as organizers focus on mobilizing young people to help address the world’s pressing problems. The COVID-19 pandemic erased years of progress the world had made toward ending extreme poverty and those setbacks have been compounded by the wars in Ukraine and Gaza and complicated by climate change, said Global Citizen CEO Hugh Evans. He estimates that about 10% of the world’s population now lives in extreme poverty and the United Nations expects 575 million people will be at that level in 2030, despite long-term plans to eradicate it.