Toxic smoke dissipates over northeastern US

Residents of the northeastern United States were breathing more easily Friday as smoke from Canadian fires gradually cleared after blanketing several cities in a noxious haze this week.

Campi Flegrei volcano edges closer to possible eruption

The Campi Flegrei volcano in southern Italy has become weaker and more prone to rupturing, making an eruption more likely, according to a new study by researchers at UCL (University College London) and Italy's National Research ...

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