Bloomberg: The world’s largest lake is warming faster than the atmosphere, challenging the idea that large bodies of water can withstand global warming, according to U.S. and Russian scientists. Siberia’s Lake Baikal, which holds 20 percent of the world’s fresh water, has warmed by 1.21 degrees Celsius (2.16 degrees Fahrenheit) since 1946, said Marianne Moore, assistant professor of biological sciences at Wellesley College in Massachusetts. Global temperatures have risen 0.76 degrees Celsius …