Credit: Unsplash/CC0 Public Domain Childhood cancers are devastating. Even when the disease is not fatal, its long-term effects can be severe. Not enough is known about the risk factors. "Research suggests that only 5% to 10% of childhood cancers are attributable solely to genetics, while the rest are due to other factors, particularly environmental ones," explained Stéphane Buteau, a professor in the Department of Environmental and Occupational Health in the School of Public Health at Université de Montréal. Prior to joining UdeM, Buteau served for many years as a scientific advisor on environmental health at Quebec's public health institute, the INSPQ. Now Buteau is leading a multi-institutional team examining the link between air pollution and childhood cancers. In study published in Environmental Pollution , the researchers examined one specific source of air pollution—gas stations—and their connection to cancer risk in children.…