The 54-year-old was on stage while presenting the Award of Courage to computer tycoon Bill Gates at the American Foundation for Aids Research (AMFAR) gala in Washington, DC.
She also appreciated Gates for his donation of almost USD 2.5 billion to various aids organisations across the world, reports contactmusic.com. "People will continue to live because of you," Stone said.
Mumbai Roundup: 9 incidents that took place this week
Photos: Ajay Devgn, Parineeti, Tabu at 'Golmaal Again' trailer launch
Photos: Dipika Pallikal Karthik oozes oomph in bikinis and sarees
Photos: Kareena Kapoor Khan's grand birthday bash
Photos: 'Dangal' girls Sanya Malhotra, Fatima Sana Shaikh's dinner outing