Chicago's cumulative report on pollution sparks debate

Straight out of the starting blocks, Chicago is learning how hard it will be to write an ordinance to reduce a broad array of pollutants built up over many years across a big, diverse city.

Examining urban design for past, present and future cities

Increasingly, more people worldwide are living in cities. By the year 2050, it is projected that two-thirds of the global population will reside in urban areas. Living closely together in relatively small spaces offers advantages ...

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