Home Melinda Gates and Bill Gates speak during “One World: Together At Home” presented by Global Citizen on April, 18, 2020. The global broadcast and digital special was held to support frontline healthcare workers and the COVID-19 Solidarity Response Fund for the World Health Organization, powered by the UN Foundation. (Photo by Getty Images/Getty Images for Global Citizen ) Melinda Gates and Bill Gates speak during "One World: Together At Home" presented by Global Citizen on April, 18, 2020. The global broadcast and digital special was held to support frontline healthcare workers and the COVID-19 Solidarity Response Fund for the World Health Organization, powered by the UN Foundation. (Photo by Getty Images/Getty Images for Global Citizen )

Melinda Gates and Bill Gates speak during “One World: Together At Home” presented by Global Citizen on April, 18, 2020. The global broadcast and digital special was held to support frontline healthcare workers and the COVID-19 Solidarity Response Fund for the World Health Organization, powered by the UN Foundation. (Photo by Getty Images/Getty Images for Global Citizen )

UNSPECIFIED LOCATION – APRIL 18: In this screengrab, (L-R) Melinda Gates and Bill Gates speak during “One World: Together At Home” presented by Global Citizen on April, 18, 2020. The global broadcast and digital special was held to support frontline healthcare workers and the COVID-19 Solidarity Response Fund for the World Health Organization, powered by the UN Foundation. (Photo by Getty Images/Getty Images for Global Citizen )

NEW YORK, NY – FEBRUARY 13:  Bill Gates speaks during the Lin-Manuel Miranda In conversation with Bill & Melinda Gates panel at Hunter College on February 13, 2018 in New York City. <P> <P><B>CREDIT:</B><BR/> John Lamparski/Getty Images</P>
Bill Gates