For over three decades, Dr. John Morse has used the gorgeous streams and rivers around the Highlands Biological Field Station as an outdoor laboratory to educate future scientists and professionals about how aquatic insects can be used to keep water systems, and ultimately us, healthy. Now in his late 70s, John reflects on how his passion for teaching has influenced a generation of scientists and professionals, and grapples with what his legacy may look like once he leaves the classroom for good.