Clear, cold, and filled with life, this special waterway is protected by towns using new ultraviolet treatment instead of poisonous chlorine to treat their sewage. (Video: Assignment Earth)

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"Assignment Earth" features compelling video reports from the front lines of major environmental stories from around the globe. Topics include global warming, pollution, habitat destruction and endangered species.

Related Links:

The Nature Conservancy in Indiana - Blue River Project

Indiana Whitewater - Blue River