Lake Baikal in Russia holds about a fifth of the world's fresh water.
(At 1,637 meters (5,371 ft), it is also the deepest lake in the world. It was declared a UNESCO World Heritage site in 1996, so let's hope that preserves its future.)
(At 1,637 meters (5,371 ft), it is also the deepest lake in the world. It was declared a UNESCO World Heritage site in 1996, so let's hope that preserves its future.)