Climate change, especially warming winters, is linked to rising rat populations in cities, according to a new study. It found “significant” increases in rat numbers in places including Washington D.C.

Rats are in many ways better adapted to cities than the humans that built them. While urbanites struggle with crowds, sparse parking spaces, and their upstairs neighbors stomping around at 4 a.m., ...

A new study finds that rat infestation in many of the world’s cities appears to be soaring, especially in Washington.

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

Global warming is helping rats thrive in major cities around the world, with Washington DC seeing the fastest growth in rats ...

Winters are getting warmer and shorter as the climate changes. That's helping rat populations grow in several U.S. cities.