NASA's Earth Observing System Project gathers data from a fleet of satellites orbiting the planet. This system of satellites is playing an increasingly important role in measuring air pollution and informing regulatory policy on a global scale. Dr. Tracey Halloway at the University of Wisconsin – Madison leads the NASA Health and Air Quality Applied Sciences Team (HAQST) which is doing extensive research in this area. HAQST is staffed by air quality and public health scientists from government offices and universities across the country. Their wide-ranging projects include measuring and tracking global pollution levels, climate change indicators, and regional haze.
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