CNN: Siberia’s Lake Baikal, the world’s largest and most biologically diverse lake, faces the prospect of severe ecological disruption as a result of climate change, according to team of U.S. and Russian scientists. The Baikal seal is the world’s only freshwater seal. Publishing their analysis in BioScience magazine the team found the most pressing threat came from the dependence of the lake’s food chain on microscopic algae. Lake Baikal’s algae are particularly vulnerable to …