Rat infestation in many world cities appears to be soaring, especially in Washington, and a new study blames warming temperatures, urbanization and other human actions. A first-of-its-kind examination ...

WASHINGTON (AP) — Rat infestation in many world cities appears to be soaring, especially in Washington, and a new study blames warming temperatures, urbanization and other human actions.

Rat infestation in many world cities appears to be soaring, especially in Washington, and a new study blames climate change, urbanization and other human actions. A first-of-its-kind examination ...

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. NBC Universal, Inc. Rat infestation in ...

FILE - A rat leaves its burrow at a park in New York City on Sept. 17, 2015. ( AP Photo/Mary Altaffer, File) WASHINGTON (AP) — Rat infestation in many world cities appears to be soaring ...

FILE - A rat leaves its burrow at a park in New York City on Sept. 17, 2015. ( AP Photo/Mary Altaffer, File) WASHINGTON (AP) — Rat infestation in many world cities appears to be soaring, especially in ...

A first-of-its-kind examination of trends and reasons in hard-to-count rat populations uses rat sighting reports in 16 cities around the world. In 11 of those cities, rat complaints have increased ...

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