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Be they orange, pink, or red, salmon share one color in common: green. According to a study published earlier this year, salmon were the third most-valuable type of seafood, worth $598 billion in 2018.
Salmon doesn't just taste good — it is good for us, too. These fish are nutritional powerhouses, laden with omega-3 fatty acids and essential minerals. Eating a diet rich in salmon could help stave off cognitive decline, improve men's reproductive health, and perhaps even treat depression. |
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The demand is so high some types of salmon struggle to keep up. But overfishing and human appetites are not the sole danger to these fish — another human desire may be driving their numbers down dramatically, a new study suggests.
The danger comes when salmon return from the ocean to rivers to spawn. Trapped in rivers, as many as 40-90 percent of salmon may be killed not through fishing, but by driving.
The culprit, it seems, is not the exhaust fumes coming from cars, the new research suggests. Rather, it is the car itself — its tires. |
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