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.

The problem is the previous owner of the three buildings, Roizman Development, defaulted on loan payments of up to $57 million for the buildings.

Climate change is fueling a surge in rat populations across major US cities, with Washington, DC, seeing the worst increase ...

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

A new study of cities across the globe has found a link between climate change and larger increases in the urban rat ...

Climate change is contributing to a global rise in urban rat infestations, according to a new Science Advances study. As ...