Case Studies

(c) 2005 Derek and Julie Ramsey (Ram-Man). Incorporated here under the Creative Commons Attribution-Share Alike 2.5 Generic license. No endorsement by licensor implied.

This photo has been released into the public domain because it contains materials that originally came from the National Aeronautics and Space Administration (NASA). No endorsement by licensor implied.

This work has been released into the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration. No endorsement by licensor implied.

Photo attributed to Dirk Ingo Franke. Incorporated here under the Creative Commons Attribution 3.0 Unported license. No endorsement by licensor implied.

U.S. Department of Transportation

© Steinkamp Photography. Used with permission.

Jamestown S'Klallam Tribe. Used with permission

Photo attributed to Diego Delso, delso.photo. Incorporated here under the terms of the license CC BY-SA. No endorsement by licensor implied.

Boston cityscape. Bert Kaufmann, Roermond, Netherlands. CC BY 2.0 (http://creativecommons.org/licenses/by/2.0), via Wikimedia Commons

Photo attributed to Ken Lund. Incorporated here under the Creative Commons Attribution-Share Alike 2.0 Generic license. No endorsement by licensor implied.

Charles Powell, public domain.