Our craving for fish is an ecological catastrophe in the making. According to WWF's report Living Blue Planet, between 1970 and 2012 overfishing has shrunk the world fish population by 49 percent. Trawling -- a widespread fishing method using large nets dragged by several boats-- is progressively eroding the seabed, and killing plenty of microorganisms thriving there.
What's maybe surprising is that not all fish are fished to be actually eaten. Almost 20 percent of them are crushed into fish oil, which is later sold as a dietary supplement called Omega-3. But fish aren't the primary source of Omega-3: algae -- which fish eat -- are. What if used them to get the good stuff, instead?
By: Gian Volpicelli and Matt Kamen,
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