The U.S. Congress has passed a sweeping law that permanently establishes the protection of 26 million acres of public lands with special scenic, historic and ecological significance.

In this video, Assignment Earth's Bruce Burkhardt explains the most significant land conservation measure in a generation. (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.