The environment has shaped human lives and been shaped by them. This Earth Day, learn and teach about the role of geography and nature in U.S. history.
Have you ever thought of the landscape around you as a primary source? Learn how to read your environment to learn about the past with resources created by an environmental historian. FIND OUT MORE »
Find primary sources on the environment
Explore a wide range of Californian geological survey maps, dating from 1895 to [...] »
This collection captures natural environments, ecologies, and plant communities [...] »
Browse strategies and lesson plans
How geography influenced interactions among Lewis, Clark, & Native [...] »
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