A map shows the effects of urban heat in neighborhoods around New York City. (Climate Central) The urban heat index is also high per capita in Chicago, but its hottest spots are more concentrated ...

A map shows the effects of urban heat in neighborhoods around New York City. (Climate Central) The urban heat index is also high per capita in Chicago, but its hottest spots are more concentrated ...

San Diego County saw a 26% increase in the "very high" hazard zone, going from 646,838 acres to 871,212, and more urban areas are designated as "very high" for the first time.

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.

The red regions represent the Portland metro area’s hottest heat islands. (Oregon Metro: see map) The data, represented in the map by shades of red and yellow, shows the difference in average ...