Do you like a planet that hasn’t yet melted? Do you like sushi? How about breathing? Then you’re secretly in love with plankton, tiny marine organisms that float around at the mercy of currents. They sequester carbon dioxide and provide two thirds of the oxygen in our atmosphere and sacrifice themselves as baby food for the young fish that eventually end up on your plate. Yet science knows little about the complex dynamics of plankton on ocean-wide scales.

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