Growing up and learning to fish on the rivers that poured into Lake Michigan, I knew lampreys were bad, but it frustrated me when, every five years, the DNR would poison my home rivers with lampricides, temporarily turning them an ugly color and (at least in my opinion) putting the kibosh on some of my favorite insect hatches for the next season.

This interesting documentary really sheds light on the complexity of the issue in ways I hadn’t fully appreciated.