The ‘Many Languages, One World’ contest challenged college and university students from around the globe to write an essay examining the post-2015 global development agenda of the United Nations – with the essays written in one of the six official UN languages, and which was not the students’ first-language. The winners were invited to UN Headquarters to address Member States at an event organized by ELS Educational Services, Inc., and the United Nations Academic Impact (UNAI). We asked participants to tell us why multilingualism is important for today's young people.