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The U.S. EPA AirNow program "protects public health by providing forecast and real-time observed air quality information across the United States, Canada, and Mexico." For the AQI (Air Quality Index) and map of your area, enter the zip code in the "Local Air Quality Conditions" box and click Go.
Selected weather and climate textbooks from the catalog
"Multiple studies published in peer-reviewed scientific journals1 show that 97 percent or more of actively publishing climate scientists agree: Climate-warming trends over the past century are extremely likely due to human activities. In addition, most of the leading scientific organizations worldwide have issued public statements endorsing this position."