No more seafood by 2050. That was how the biggest-ever analysis of global marine biodiversity and fisheries, published last week, was widely reported. In fact, the study was not just another forecast of doom from fisheries scientists. Instead, what it provided was confirmation, on a global scale, that life in the ocean is an enormously complex system. For its ecosystem "services" to work - for the ocean to absorb pollution and provide us with food - it needs all its parts intact.
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