PhysOrg: Regardless of latitude, urban temperatures are typically several degrees higher than those of nearby suburban and rural areas. The resulting "heat islands" mean increased discomfort, higher air-conditioning bills and denser smog.
A major culprit? Hot roofs baked by the sun. The solution? Cooling down those roofs by using reflective surfaces-and doing so even if those cities are covered in snow for several months of the year.
A new study published by researchers from Concordia University in...