Inside Chris Martin’s Plan To Save The World In 15 Years

Chris Martin’s first phone call with Richard Curtis didn’t go very well. “Hello, this is Chris Martin from Coldplay,” the filmmaker recalls the singer saying. “I hear you’re doing a movie—you can’t use any of my songs.”

What a difference a few years makes. Last week at a posh lower Manhattan eatery, the pair joined Global Citizen co-founder Hugh Evans and U.N. special advisor Amina Mohammed to announce an ambitious plan: organizing a charity mega-concert in a different city each year through 2...