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Petra Nemcova, co-founder of the Happy Hearts Fund, speaks during the Milken Institute Global Conference in Beverly Hills, California, U.S., on Wednesday, May 1, 2019. The conference brings together leaders in business, government, technology, philanthropy, academia, and the media to discuss actionable and collaborative solutions to some of the most important questions of our time. Photographer: Patrick T. Fallon/Bloomberg via Getty Images

Petra Nemcova, co-founder of the Happy Hearts Fund, speaks during the Milken Institute Global Conference in Beverly Hills, California, U.S., on Wednesday, May 1, 2019. The conference brings together leaders in business, government, technology, philanthropy, academia, and the media to discuss actionable and collaborative solutions to some of the most important questions of our time. Photographer: Patrick T. Fallon/Bloomberg via Getty Images