Fishy business?
The old adage has it that teaching a man to fish will feed him for a lifetime, but will it really? With marine ecosystems increasingly threatened by overfishing and pollution, scientists say there may soon be more plastics in the oceans than fish. Is it already too late to reverse the situation? Oksana is joined by Enric Sala, a marine ecologist and National Geographic explorer-in-residence, to discuss these issues.
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