More than half of world's oceans already being affected by climate change

More than 50% of the world's oceans could already be affected by climate change, with this figure rising as high as 80% over the coming decades, a new study has shown. Scientists used climate models and observations in deeper areas of ocean worldwide to calculate for the first time the point at which changes to temperatures and salt levels—good indicators of the impact of human-induced climate change—would overpower natural variations.

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