Pretty in pink: India crater lake changes colour overnight

A crater lake in India's western Maharashtra state has turned pink overnight, delighting nature enthusiasts and surprising experts who attributed it to changing salinity levels and the presence of algae in the water.

Firepits of the Gods: Ancient memories of maar volcanoes

In the heart of Takapuna, north-central Auckland, is a natural lake—Pupuke—while a little way offshore lies the volcanic Rangitoto Island. Long ago, a family of giants lived at Takapuna until one day, ill-advisedly, ...

Lake Tahoe's clarity improved dramatically over past year

The famed cobalt blue waters of Lake Tahoe became more clear last year, gaining 10 feet in visibility from the year before, according to a new study released Thursday by scientists at the University of California, Davis.

Evolution does repeat itself after all

For every two species of mammal there is one species of cichlid fish, which goes to show that biodiversity is distributed rather unevenly among animals. But why? And to what extent can evolution be predicted? A variety of ...

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