Lake Baikal is the world’s largest lake, a fact that kind of surprised me (and chagrinned my Michigander friend) when I discovered it a few years ago. It contains 20% of the Earth’s surface fresh water; Baikal doesn’t look so unaccountably massive on a map, but it’s exceedingly deep. Formed in an ancient rift valley like Lake Tanganyika, it has that long crescent-shaped rift valley sort of look to it.
Lake Baikal is the most diverse lake ecosystem in the world, with many species that are found nowhere else including the only world’s only freshwater seal. The warming, of course, is causing all sorts of ecological clusterfuckage, and illustrates how catastrophic climate change already is. If a lake this size is already profoundly affected, it’s not a good sign.
Image from Wikipedia.