Thanks to the efforts of outspoken activists like Greta Thunberg, you might think that climate activism is a modern phenomenon. But on April 22, 1970, the US went climate crazy – as 20 million Americans took part in the very first Earth Day.
- What is NASA (National Aeronautics and Space Administration)?
- Building the Erie Canal: Explained
- What is the Department of Transportation?
- What is Propaganda?
- What is the Department of the Interior?
- Shirley Chisholm: Confronting the Political Machine
- What is the National Archives and Records Administration?
- What Caused the War of 1812?
- What Are Congressional Investigations?
- Hazelwood v. Kuhlmeier: Free Speech in School