Michael Green: The global goals we've made progress on -- and the ones we haven't

"We are living in a world that is tantalizingly close to ensuring that no one need die of hunger or malaria or diarrhea," says economist Michael Green. To help spur progress, back in 2015 the United Nations drew up a set of 17 goals around important factors like health, education and equality. In this data-packed talk, Green shares his analysis on the steps each country has (or hasn't) made toward these Sustainable Development Goals — and offers new ideas on what needs to change so we can achieve them.