Droughts in the sixth century paved the way for Islam

Extreme dry conditions contributed to the decline of the ancient South Arabian kingdom of Himyar. Researchers from the University of Basel have reported these findings in the journal Science. Combined with political unrest ...

Lava from Spanish island volcano rolls slowly toward the sea

Lava flowing from a volcano in Spain's Canary Islands picked up its pace on its way to the sea Tuesday, but scientists said it was impossible to estimate when the black-and-red stream of molten rock would reach the shore.

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