Why tourists are being told to wipe their shoes before visiting the ‘world’s clearest lake’
Hikers in New Zealand risk polluting the “clearest lake in the world” with a microscopic alga carried on their boots.
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Crushed by boulders, drowned in mud: How debris flows endanger LA’s fire-ravaged communities
As a principal engineer for the county’s Public Works Department, Klippel’s job is to try to stop catastrophic flows of mud, ...