Scientists studied 30 Sierra Nevada ponds that can swing 20°C in a day. Shrinking snowpack may make them smaller, warmer and more nutrient-rich, California, Irvine Beloud

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Scientists studied 30 Sierra Nevada ponds that can swing 20°C in a day. Shrinking snowpack may make them smaller, warmer and more nutrient-rich

Scientists studied 30 Sierra Nevada ponds that can swing 20°C in a day. Shrinking snowpack may make them smaller, warmer and more nutrient-rich

High in California's Sierra Nevada mountains, small ponds may look peaceful and unchanged. Surrounded by rocky peaks and open skies, they appear calm during summer. But beneath the surface, ...

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