The content originally appeared on: CNN (CNN)Smoked, poached, grilled, pan-seared, and even raw: salmon is as versatile as it is popular - and has become the world's largest single fish commodity by value. But that popularity has come at a high cost, and the population of wild North Atlantic salmon halved between 1983 and 2016. It's a symptom of a wider problem: nearly 90% of global marine fish stocks are depleted, overfished or fully exploited, according to United Nations research. […]