Yale Environment 360: The presence or scarcity of vegetation is an essential factor in determining how much urban areas heat up, according to a NASA study. Using data from multiple satellites, the researchers found that areas covered in part by impervious surfaces such as asphalt, concrete, and steel had an average summer temperature 3.4 degrees F higher than nearby rural areas. The highest U.S. urban temperatures compared to surrounding areas were along the Interstate-95 corridor from Boston to Washington and around...