Rat infestation in many world cities appears to be soaring, especially in the nation's capital, and a new study blames ...

An extra month may not sound like much, but female rats can have a litter every month. Each litter is eight to 16 baby rats, Richardson said: “That is a recipe for accelerated population growth.” ...

A new study linked increased rat numbers to climate change and urban heat islands. D.C. measures the rat population by the ...

Rats! More Rodents Are Infesting Cities as Scientists Say Warmer Temperatures Mean More Rat Babies WASHINGTON (AP) — Rat infestation in many world cities appears to be soaring, especially in ...

An extra month may not sound like much, but female rats can have a litter every month. Each litter is eight to 16 baby rats, Richardson said: “That is a recipe for accelerated population growth.” ...