As the world heats up, cities with heat-trapping asphalt and little tree cover have left residents sweltering and breathing in more air pollution.

Asphalt is releasing hazardous air pollutants into communities, especially when hit with extreme heat and sunlight, according to research published in the journal Science Advances on Wednesday. Researchers found that asphalt in California’s South Coast Air Basin emitted more secondary organic aerosols in the summer than gas and diesel motor vehicles combined.

Read More

Photo credit David Becker | Reuters