Nicolaas Mink, Ph.D., CEO and co-founder of Sitka Salmon Shares, returns to the show to talk about how his company is working to sustain fish populations in our increasingly threatened oceans. Christine Esposito, project director of "Third Coast Disrupted: Artists + Scientists on Climate" joins artist Barbara Cooper and Tyrone Dobson from Alliance for the Great Lakes to talk about the environmental and existential threats posed by our insatiable plastic production and consumption.