Center for International Earth Science Information Network (CIESIN) Columbia University
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Selected Blog Posts
The Changing Face of Air Quality
Looking at regional differences in PM2.5 concentrations gives us a sense of the changing face of air quality throughout the world.

Mapping Tool Lets Users Pinpoint Hazards Data
The SEDAC Hazards Mapper is designed for disaster risk managers, humanitarian response organizations, public health professionals, journalists and others needing a quick assessment of the potential dangers posed by a major hazardous event or developing emergency.

Teen Literacy in Nigeria is Lower in the North
In Nigeria, differences in adolescent literacy rates between states are striking—higher in the South and lower in the Northeast.

In Haiti, Exploring What Drives People to Alter the Landscape
Study of the Pedernales Watershed, located along Haiti’s southern national boundary with the Dominican Republic, may provide insights into the stark contrast in land cover patterns between the two countries.

A Spatial Analysis of the 2008 Itajaí River Valley Disaster
Biophysical and socioeconomic risk factors—such as terrain, population distribution, settlement patterns, poverty, and governance—can combine to produce high levels of vulnerability to heavy rainfall, flooding, and landslides.

Coastal Erosion and Adaptation to Climate Change
Increasing understanding of the extent of coastal erosion and its interaction with other naturally existing geographical features such as mangrove vegetation is one of the areas of research that may help reduce vulnerability of small-island developing states to climate hazards.

Night-time Lights Can Help Illuminate Trends in Urbanization
Improved satellite technology can enable more detailed and precise analysis of urban development patterns over time.

Emerging Use Cases for Digital Soil Nutrient Maps of Ethiopia
By basing efforts to improve soil fertility directly on soil nutrient composition, the Ministry of Ethiopia will be able to identify key problems that are often overlooked, and to customize responses.

Analysis of Spatial Data Combined with Teen Pregnancy Rates May Provide Increased Insights
Country efforts to improve the health and well-being of its populace may be helped by insights from improved population distribution data.

Climate Forecasts: A Vital Tool for Policymakers
Focusing on near-term probabilities can also aid in decreasing vulnerability to future climate uncertainties.