Volcanic ash cloud disrupts South America flights

A vast cloud of ash spewing from a Chilean volcano disrupted air travel across much of South America, while heavy rains around the eruption site prompted fears of mudslides.

Confirmed: Global floods, droughts worsening with warming

The intensity of extreme drought and rainfall has "sharply" increased over the past 20 years, according to a study published Monday in the journal Nature Water. These aren't merely tough weather events, they are leading to ...

Ancient Pa. dwelling still divides archaeologists

A fluke rainstorm at an ancient rock shelter in western Pennsylvania has brought a renowned archaeologist back to the site of where a furious debate was launched in 1973 over when the first humans came to the Americas.

Severe storms swell Iguazu falls to 10 times normal flow

The famed Iguazu waterfalls on the border between Argentina and Brazil have registered 10 times their usual water volume after heavy rains, authorities said, closing one of the site's main tourist walkways for safety reasons.

Locust plague hits eastern Australia

Swarms of locusts have infested a huge area of eastern Australia roughly the size of Spain after recent floods, ravaging farmland, a top official said Wednesday.

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