WebMay 29, 2024 · The world’s largest group of freshwater lakes, the Great Lakes are definitely fascinating: formed 14,000 years ago from retreating ice sheets, they contain 84 percent of North America’s surface fresh water and are important geologically, hydrologically, ecologically, and historically. WebHistory’s Greatest Mysteries is a one-hour documentary series that examines the top theories surrounding the world’s most enigmatic unsolved mysteries.

11 epic mysteries scientists totally can’t solve - Vox

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14 biggest historical mysteries that will probably never be …

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