Evidence suggests that atmospheric aerosols from biomass burning may offset global warming caused by greenhouse gases.

NASA satellite data of regional haze allow EPA scientists to expand their focus from local to regional air quality monitoring and forecasting.

Teams of scientists and resource planners assess their region’s most critical vulnerabilities in the United States National Assessment on the Potential Consequences of Climate Variability and Change. The report covers agricultural productivity, coastal areas, water resources, forests, and human health.

Questions from visitors to the Earth Observatory and answers from scientists.