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 ...

Aside from humans, the laboratory rat (Rattus norvegicus) must be the most studied organism on the planet. According to the ISI Web of Science, over 100,000 publications since the year 2000 refer ...

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

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 ...

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.