Having lived within an hours drive of a Great Lake for most of my life, especially lake Ontario, I have to wonder exactly what is left of that ecosystem to ruin. We are talking the same lake, right? The one that, when they tried to clean it, they discovered they were stirring up so much toxic sludge that it was a better idea to leave it there?

On a more serious note, the carp do have the potential to do a lot of damage. But closing those locks isn't the answer.