US: SkyTruth, a nonprofit environmental monitoring group, launched an automated pollution alert system. It uses remote sensing and digital mapping to track pollution events in the US. It shows air and water pollution, toxic spills and other incidents on an interactive map, noting the time of the event and whether toxic materials are involved. Users can track specific geographic areas and receive updates via email or RSS feeds.
The group gets satellite images, aerial photographs and reporting data from federal and state emergency response agencies to compile the maps.