The oceans are heating up.

So, just as a refresher, it’s always good to remember that we live on an ocean planet.
 Most of the Earth’s surface is salt water, studded with the large islands we call continents.
 It’s worth recalling this small fact – which can slip our minds, since we humans congregate on the patches of dry ground – because new data shows just how profoundly we’re messing with those seven seas.
The International Union for the Conservation of Nature has published an extensive study concluding that the runaway heating of the oceans is “the greatest hidden challenge of our generation”.
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