Life on Earth under 'existential threat': climate scientists

Climate change poses an "existential threat" to life on Earth, prominent scientists warned Tuesday, in an assessment on this year's avalanche of heat records and weather extremes that they said are hitting more ferociously ...

Reef fish evolution driven by biting

Coral reefs are home to a spectacular variety of fish. A new study by biologists at the University of California, Davis shows that much of this diversity is driven by a relatively recent innovation among bony fish—feeding ...

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