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Explore the geography of the Rocky Mountains, one of North America’s most iconic and majestic mountain ranges. This video ...
Live Science on MSN6d
North America's 'broken heart': The billion-year-old scar from when the continent nearly ripped apartThe Midcontinent Rift is a giant tear that formed in what is now the U.S. Midwest 1.1 billion years ago. Nicknamed North ...
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