In every city studied, at least 20% of the urban area is sinking – and in 25 of 28 cities, at least 65% is sinking. The nation's biggest cities are sinking, according to data from a new study.

Cities in California make up a significant proportion of the country's most polluted metropolitan areas when it comes to air quality, according to a new report.

He told USA TODAY that "some early warning signs ... On the map, why do some cities show uplift instead of sinking? On the map, three cities (San Jose, California; Memphis, Tennessee; and ...