Tom Kelly from Island Seas Education Association joins Dave

More Threats To The Great Lakes -- Several weeks ago it was the 'ownership' threat to the Great Lakes, with Jim Olson; this week it is the invasive species threat. Tom Kelly, executive Director of the Inland Seas Education Association joins Dave to update the status of foreign mussels in our Great Lakes water. Quagga mussels are now replacing zebra mussel as the worst threat. Quaggas filter a much deeper water column robbing native species of vital food at the bottom of the native food chain. Our water may clearer these days, but that doesn't always mean it's healthier.  Tom updates the state of the fight against Asian Carp and suggests that unless the barrier to the fish is pushed much farther downstream, farther from Lake Michigan, it is only a matter of time before that nightmare unfolds on the Great Lakes.