Watch former President Barack Obama speak at the event on Wednesday.
Former President Barack Obama spoke at the Bill and Melinda Gates Foundation Goalkeepers event in New York on Wednesday to measure the progress of global health over the past 25 years.
This event is timed to the U.N. General Assembly and the release of a report by Bill and Melinda Gates, which measures the world's health according to 18 indicators. These include infant mortality, AIDS, vaccine use and smoking rates.
Other speakers at the event include Bill and Melinda Gates, Prime Minister Trudeau, will.i.am, Malala and Stephen Fry.