The Smithsonian Institution is a museum, education and research complex. Working in more than 140 countries, the Smithsonian bridges disciplines and borders, whether recovering endangered species, preserving cultural heritage or inspiring tomorrow’s scientists and leaders. It comprises the 19 national museums of the United States and National Zoo and research centres including the Smithsonian Tropical Research Institute and Smithsonian Astrophysical Observatory. It has 156 million objects in its collections and draws 30 million visits a year. The Smithsonian shares its extraordinary collections and research with learners everywhere – its STEM curricula has been used in 25 countries.