Climate change could bring sudden drought to La Paz

Boston Globe: As the world warms, scientists expect some ecosystems to gradually migrate up slopes, essentially chasing environmental conditions they needs to thrive. But according to recent research on the historical ecology of the Andes conducted in part by a Westfield State University assistant professor, those steady changes can reach a tipping point in some cases that flips local ecosystems on their head. The scientists examined fossilized pollen in Lake Titicaca, the world’s highest elevation great......

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