Sea otters killed by unusual parasite strain

Four sea otters that stranded in California died from an unusually severe form of toxoplasmosis, according to a study from the California Department of Fish and Wildlife and the University of California, Davis. The disease ...

Humanity has 'broken the water cycle,' UN chief warns

The future of humanity's "lifeblood"—water—is under threat worldwide, the UN secretary-general warned Wednesday at the opening of the global body's first major meeting on water resources in nearly half a century.

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