Earth’s Oldest And Deepest Lake Hides A "Dark Secret": Cannibalistic FishThe world’s oldest lake lies in southeastern Siberia and is thought to have existed for about 25 million years. Along with being the great-great-grandfather of lakes, Baikal is also the deepest, plunging 1,700 meters (5,600 feet). That remarkable depth holds roughly 20 percent of the planet’s unfrozen freshwater, and in a...
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