Duluth Minnesota, population 84,380, sits at the westernmost tip of Lake superior. It is built into a steep rocky cliff side and is rated by Money magazine as one of the top four midwestern small cities based on livability. Duluth also has been featured in the New York Times as one of the cities with the infrastructure and location necessary to survive climate change. By mid century, the climate in Duluth will begin to approximate that of Toledo Ohio. Health Matters talks about climate change, brain stimulation, and avoiding dementia.