In 2025, the ocean gained 24 Zettajoules of heat, but what is a zettajoule?
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The joule is the unit of energy. One zettajoule (ZJ) is 1,000,000,000,000,000,000,000 Joules. One times ten to the power of twenty one Joules. One followed by twenty one zeroes Joules. I will tell …