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9 Facts About The Grand Canyon - From Earth Researchers

The Canyon's Age Sparks Fierce Scientific Debate Scientists have spent over a century arguing about when the Colorado River first carved through the Colorado Plateau. A diverse set of geologic studies ...

Venture beyond the Grand Canyon to this remote and rugged corner of Arizona

Hike through secret slot canyons, spot endangered California condors, visit sacred Navajo sites, and kayak a stunning 10-mile ...