Cancer risk from toxic air drops by 17% in SoCal (Los Angeles Times) An AQMD report cautions that even with the decline over the last 7 years, many areas still have dangerously high levels of pollution. Diesel exhaust is the largest problem, the study says. Cancer risk from Southern California's air pollution has declined by 17% over the last seven years, but remains dangerously high across the region, particularly near the ports, along truck-laden freeways, ... [News Source]