Author: Carolyn Gramling / Source: Science News

The world’s oceans are sweltering. Over the last century, marine heat waves have become more common and are lasting longer.
New research suggests the annual number of days that some part of the ocean is experiencing a heat wave has increased 54 percent from 1925 to 2016, researchers report April 10 in Nature Communications.Typically, scientists define a marine heat wave as at least five consecutive days…
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