Q&A: Urban doom loop—what it is and how cities can stop it

Recent images of downtown San Francisco—emptied of office workers now dialing in remote and filled with wandering homeless people—has struck fear for the future of urban areas. A Columbia University professor coined the ...

City-dwelling wildlife demonstrate 'urban trait syndrome'

City life favors species that are adaptable and, among other things, not too fussy about what they eat. A worldwide consortium of scientists calls the resulting collection of characteristics "urban trait syndrome."

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