On April 22, 1970, more than 20 million Americans gathered on college campuses and in city squares to celebrate the first Earth Day. Some came to spread the word, others came to learn, but all were a part of the largest organized demonstration in American history. Explore snapshots of events around the country.
Discover the fascinating story of Elizebeth Smith Friedman, the groundbreaking cryptanalyst who helped bring down gangsters and break up a Nazi spy ring in South America. Her work helped lay the foundation for modern codebreaking today.
A meditation on man’s complex relationship with nature and an engaging history of the revolutionary achievements and missed opportunities of eco-activism, Earth Days looks at the dawn and development of the modern environmental movement.