But many people in rural areas are exposed to particularly high levels of pollution, both indoors and outdoors. (sciencedaily.com)
With current high levels of pollution, the human body is now producing more free radicals than it should produce naturally. (fitness-baron.com)
Site - based regulations, such as appliance efficiency standards and measurement, can lead to higher energy resource consumption as well as higher levels of pollution. (instituteforenergyresearch.org)