Many of the world’s current energy sources are both unsustainable and harmful to the environment, so the idea that a relatively safe fuel is abundant in seawater will come as welcome news to many.
But the energy is released in the process of nuclear fusion, in which two atomic nuclei combine to form a heavier nucleus — a difficult scientific and engineering feat to achieve, with many unanswered questions.
Physics
We have had one such encouraging idea annually for more than half a century.
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