An invasive fish with a voracious appetite, the Asian carp, threatens to reach the Great Lakes through a canal from the Mississippi River and cause environmental and economical devastation. (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.

What happens if there is an Asian carp invasion?
Video: If this invasive fish with a voracious appetite reaches the Great Lakes, there could be environmental and economical devastation.