see more

WASHINGTON, DC - APRIL 20: Gates Foundation Co-Chair Melinda Gates participates in a panel discussion during the World Bank Group and International Monetary Fund Spring Meetings April 20, 2017 in Washington, DC. The panel discussion, titled 'How Investing in Adolescents Today Can Change the World of Tomorrow,' focused on the the World Bank Group's Generation Now initiative. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - APRIL 20:  Gates Foundation Co-Chair Melinda Gates participates in a panel discussion during the World Bank Group and International Monetary Fund Spring Meetings April 20, 2017 in Washington, DC. The panel discussion, titled 'How Investing in Adolescents Today Can Change the World of Tomorrow,' focused on the the World Bank Group's Generation Now initiative.  (Photo by Chip Somodevilla/Getty Images)