Based on individual trends within cities, Washington was by far the leader in rat increases, followed by San Francisco, Toronto, New York City and Amsterdam.

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Climate change is fueling a surge in rat populations across major US cities, with Washington, DC, seeing the worst increase over the past two decades, a new study said.The study published by Science ...

Global warming is worsening droughts, making sea levels rise, and fueling deadly storms. Now scientists have a new problem to add to that list: Climate change is helping rat populations thrive in U.S.

In the first study of its kind, scientists found a correlation between climate change and a rise in urban rat populations.

Simmering urban temperatures are bad for humans. It's another story for rats, according to new research -- especially in ...

Global warming caused mainly by burning of fossil fuels made the hot, dry and windy conditions that drove the recent deadly fires around Los Angeles about 35 times more likely to occur, an ...

Two large wildfires that exploded on January 7 in Los Angeles were the most destructive and potentially the costliest in the city's history.  Still burning after three weeks, the Palisades and Eaton ...