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For decades, oceanographers have embraced the idea that Earth's ocean currents operate like a conveyor belt, overturning to continuously transport deep, cold polar waters toward the equator and warm equatorial surface waters back toward the poles. The model held that the conveyor belt was driven by changes in temperature and salinity of the surface waters at high latitudes. This article reviews the growing body of evidence that suggests it's time to rethink the conveyor belt model. [Source: EurekaAlert!]
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