Sharp rise in population in 11 of 16 cities expected to continue as rising temperatures make it easier for the animals to breed, say researchers
Rat numbers are soaring in cities as global temperatures warm, research shows.
Washington DC, San Francisco, Toronto, New York City and Amsterdam had the greatest increase in these rodents, according to the study, which looked at data from 16 cities globally. Eleven of the cities showed “significant increasing trends in rat numbers”, said the paper published in the journal Science Advances, and these trends were likely to continue.
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