We could see why Mary Ann is a master teacher, a distinction given to the school's best teachers and an important component of a teacher-evaluation system in Eagle County.

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Eagle is already in talks to license the system to at least one company that plans to use it to keep an eye on employees, and he's also started a social networking company, which will presumably have more benign goals.

ENGADGET: MIT project uses cellphone data to predict activities

Getting back onto the road system, drive north from Anchorage on the Glenn Highway, to the Eagle River Nature Center.

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