Fracking has led to an increase in truck traffic, one of the reasons for worsening trends on air quality in areas with oil and gas drilling. (AP Photo/Charles Rex Arbogast) By Gunnar W. Schade, Texas A&M University College of Geosciences, for The Conversation Urban air pollution in the U.S.
By Nancy Luedke, Texas A&M University College of Engineering A significant amount of U.S. domestic oil production comes from shale. Extracting oil and gas from these unconventional reservoirs normally requires drilling horizontal wells and using hydraulic fracturing techniques. Yet predicting the full effect of these techniques is still uncertain…
