arstechnica.com
In 2025, the world’s oceans absorbed more heat than ever before, marking the eighth consecutive year of record-breaking heat absorption. According to a study by over 50 scientists, the ocean absorbed an additional 23 zettajoules of heat—a figure significantly higher than the previous year. This amount of energy is equivalent to 12 Hiroshima atomic bombs exploding in the ocean. As the planet’s largest heat sink, the oceans absorb over 90% of excess heat trapped in the atmosphere, with the heat warming not just the surface but also the deeper ocean currents.
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