Urban residents in cities like Washington DC, San Francisco, Toronto, New York, and Amsterdam are increasingly encountering rats, a trend linked to climate change and urbanization. Research published in the Journal Science Advances indicates that rat populations have significantly risen in at least 11 of 16 studied cities due to warmer temperatures allowing for extended feeding windows and faster breeding cycles. The chief researcher, Jonathan L. Richardson, noted that the presence of rats can adversely affect urban living conditions and public health, as they carry over 50 diseases and various parasites. Management efforts are challenged by the cleverness of rats, with the estimated cost of rat control in the U.S. reaching $500 million annually. Cities are urged to enhance pest management strategies and invest more resources to tackle the increasing rat populations effectively.
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