The oceans just reached their hottest temperature on record as El Niño looms. Here are 6 things to watch for
By Laura Paddison and Rachel Ramirez, CNN Scientists have watched in astonishment as ocean temperatures have steadily risen over the past several years — even as the cooling La Niña phenomenon had a firm grip on the Pacific. The oceans have been record-warm for the past four years, scientists reported in January. Then in mid-March,
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