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Follow in Lewis and Clark's footsteps in this cross-country interactive journey.
Watch a mature, male bighorn sheep munching grass in Montana's Glacier National Park.
Find out whether California can balance the demands of a growing population with its amazing biodiversity in this feature.
Take a photographic journey through Montana and enter for a chance to win a trip for two!
Check out adventure videos from our West Coast Adventure Editor Steve Casimiro and go "Behind the Lens."
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