Environment
AIRNow: Government website on air quality conditions.
Los Angeles River Revitalization: City site on LA river revitalization plan.
Southern California Earthquake Data Center: Up-to-date info and historical data on local earthquakes and faults.
Environmental Terms: Glossary of environmental terms and acronyms from the EPA.
World Biomes: Maps, images, and data on "biomes"—regions distinguished by their climate, fauna and flora.