National Atlas
Federal source for national maps and geographic information that contains an online map maker, dynamic maps, printable maps, articles, free geographic data, and more.
http://www.nationalatlas.gov/
Restoring a prairie is a great challenge, requiring knowlege of biology, ecology, climatology, and even economics.
This site is a goldmine of information and resources for teachers and students. A good place to start your exploration would be the “Top Picks” on the Open Vault homepage, and once in a relevant record, further recommendations appear at the left of the page. Each record includes a video description, and when applicable, program and series descriptions. Open Vault includes over 500 streaming video clips and more than 1,000 interviews drawn from public television station WGHB’s programming between 1968 and 1993. Topics range from desegregation and busing, the Cold War, interviews with and performances by leading dancers, writers and poets, and much more. Some highlights include: Muhammad Ali discussing his refusal to fight in Vietnam; African American students arriving at school during Boston's court-ordered de-segregation; Bill T. Jones performing a monologue and solo dance; and Robert McNamara reading from a letter sent by Nikit a Khrushchev to President Kennedy during the Cuban Missile Crisis. The video clips are short, focus on one event, and can be replayed for in-depth analysis, making them a good choice for stimulating classroom discussion.