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"The History Engine is an educational tool that gives students the opportunity to learn history by doing the work-researching, writing, and publishing-of a historian. The result is an ever-growing collection of historical articles or "episodes" that paints a wide-ranging portrait of life in the United States throughout its history and that is available to scholars, teachers, and the general public in our online database." Via http://www.freetech4teachers.com/2012/04/history-engine-explore-stories-of.html

Welcome to Smithsonian WILD! This site is designed to showcase some of the exciting research conducted by the Smithsonian Institution and its collaborators around the world, and to highlight the incredible diversity of wildlife that exists in a range of habitats across the globe.  The use of motion-triggered 'camera traps' has become an incredibly useful tool for scientists to answer an enormous range of conservation and ecological questions. Researchers attach these unique cameras to posts or trees, often along forest trails, and when a camera's sensor registers an animal's body heat and movement, a photograph is taken. The studies highlighted here demonstrate the range of applications of this method, and how these cameras give us a glimpse into an animal world that is rarely seen by anyone. You can search the site by following the trail of interesting animals or the lure of diverse sites around the world.