Hurricane Lidia strengthens on course for Mexico

Hurricane Lidia gained strength Tuesday as it headed toward Mexico's Pacific coast, threatening to bring flooding and mudslides to a region that is home to a string of beach resorts, forecasters said.

Medicanes: rare, 'supercharging' Mediterranean storms

The flash flood that has killed thousands of people in Libya this week followed a "medicane", a rare but destructive weather phenomenon that scientists believe will intensify in a warming world.

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