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Great Lakes Invasion

We report on an invasive species that;s causing ripples in the Great Lakes' food chain.

Aired 04/12/2012 | Rating NR

Chicago Tonight

Great Lakes Invasion

Clip: 4/12/2012 | 8m 44s

We report on an invasive species that;s causing ripples in the Great Lakes' food chain.

A tiny, fingernail-sized organism that some are calling the scourge of the Great Lakes is fundamentally altering marine life. Ash-har Quraishi reports on a devastating invasive species that is causing ripples all the way up the food chain.

Aired 04/12/2012 | Rating NR

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