National Public Radio: Small fatty fish like mackerel, herring, sardines and anchovies are high in omega-3s, vitamin D and low on the food chain.
Those shining attributes have earned them plenty of nods from doctors and environmentalists alike, as we've reported. They're not among the most popular seafoods in the U.S., though, partly because of their fishy taste.
But if you knew that eating these fish would mean shrinking your carbon footprint a wee bit, would that convince you to buy them over say, that bag of frozen...