Mass extinction study provides lessons for modern world

The Cretaceous Period of Earth history ended with a mass extinction that wiped out numerous species, most famously the dinosaurs. A new study now finds that the structure of North American ecosystems made the extinction worse ...

Forest razing by ancient Maya worsened droughts, says study

(Phys.org) -- For six centuries, the ancient Maya flourished, with more than a hundred city-states scattered across what is now southern Mexico and northern Central America. Then, in A.D. 695, the collapse of several cities ...

Grace upgraded to hurricane, heads for Mexico

Tropical storm Grace strengthened to a hurricane on Wednesday as it barreled toward Mexico's Caribbean coast, threatening to bring heavy rain, flash flooding and large waves, meteorologists said.

Experts: Warming makes Delta, other storms power up faster

Hurricane Delta, gaining strength as it bears down on the U.S. Gulf Coast, is the latest and nastiest in a recent flurry of rapidly intensifying Atlantic hurricanes that scientists largely blame on global warming.

Hurricane Delta weakens as it heads towards Mexico

Hurricane Delta lost strength Wednesday as it churned towards Mexico's Caribbean coast, where thousands of tourists hunkered down in emergency shelters in a string of major beach resorts.

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