A mysterious French artist who transforms some of the world’s most downtrodden slums with his haunting large-scale photographs has won a $100,000 humanitarian award for his work. Past winners of the TED prize — which is named after a California lecture series that focuses on technology, entertainment and design — include Bono and Bill Clinton. Recipients make a “wish” for a philanthropic project they’d like to head up, and outside donations then come pouring in.