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

Rat populations are growing in cities around the world because of climate change. A new study explains why this is happening ...

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

Urban ecologists looked at 16 cities from Tokyo to New Orleans and found New York City had the fourth-highest rat population ...

Humans have done a lot to help rats become one of the most prolific mammals on the planet. We leave out food waste and trash. Our buildings and sewers provide cozy homes. We inadvertently help ...