In Four Fish: The Future of the Last Wild Food (Penguin, $26), environmental journalist Paul Greenberg examines the historic, current, and future impact of our insatiable desire for salmon, sea bass, cod, and tuna. He chronicles the overfishing of these species to the point of scarcity and the unintended consequences that fish farming has on the environment and genetic diversity. Greenberg is ultimately hopeful, though, and charts a course for more sustainable fish farming that looks to preserve the planet’s dwindling stock of wild fish.
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