Tongans warned of acid rain after volcanic eruption

A toxic cloud spewing from an erupting volcano in Tonga could dump acid rainfall across the Pacific kingdom, potentially poisoning drinking water and damaging people's skin and eyes, emergency services have warned.

Efforts to cut car, plane and ship emissions get small boost

Several countries and companies announced plans Wednesday to stop selling cars that run on gasoline or diesel over the next two decades, as part of efforts to clamp down on a significant source of planet-warming emissions.

Video: Aerosol spread from Australian fires

Ferocious bushfires have been sweeping across Australia since September, fueled by record-breaking temperatures, drought and wind. The country has always experienced fires, but this season has been horrific. A staggering ...

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