On Earth Day, April 22, Washington, D.C. saw multiple events in support of math and science. Roughly 150,000 supporters attended the March for Science on the National Mall in the nation's capital. Attendees braved the rain to advocate for climate science and evidence-based facts that uphold the common good. Satellite marches, rallies, and events took place in 600 cities around the world. Read a report of the march by Hans Kaper and Hans Engler.
The National Mathematics Festival, an event organized with the goal of inspiring and challenging participants to see math in new and exciting ways, featured lectures, hands-on art, puzzles, and games and activities for younger audiences. Read an account of the methods used to count crowds at the event.
View photos from the two events below. All photos courtesy of Nicholas Higham.