On April 6, 2018, four first-class stamps that pay tribute to the study of science, technology, engineering, and math (STEM) were released by the U.S. Postal Service (USPS). Each stamp features a collage of faces, symbols, drawings, and numbers that represent the complexity and interconnectedness of the STEM disciplines. Baltimore artist Davide Plunkert worked with art director Antonio Alcala to create these stamps. Read more.