All around the world, lakes are in trouble--with fish kills or toxic algae blooms. Usually, the culprit is excess nutrients washing into the lake. It's happening even at pristine lakes, long thought to be immune to these problems.
From time to time, I'll feature problems of lakes in a different parts of the world. The root cause is growing populations and affluence, plus the difficulty of managing thousands of small sources of nutrients.
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Indian Kashmir used to be a place people compared to mythical Shangri-La--verdant and unspoiled. And Nigeen Lake (above), in a green valley surrounded by the Himalayas, is considered by waterways officials to the least polluted waterway in the city of Srinagar (population 1.3 million).
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