Giant Joro spiders the size of a human hand are spreading across the US fast

They thrive in cities and cold weather

Giant Joro spiders, originally from East Asia, are rapidly expanding across the United States. Known for their large size and impressive webbing, they can survive colder conditions and adapt to urban environments, helping them move into new regions. Researchers say they’re unlikely to pose a threat to people, though their arrival is shifting local insect populations, tracked partly through citizen science.