PBS
Pbs: Journey to Planet Earth: On the Brink
A part of the PBS series "Journey to Planet Earth," this section examines "how severe environmental problems can lead to political crises and increased hostilities around the world." Includes video clips and educational resources.
NPR: National Public Radio
Npr: Dirty Work: Sewer Cleaners
Part of NPR's series called "Dirty Work," this site features a trip into the Cincinnati sewer system. Learn how sewer workers help improve our environment.