this post was submitted on 13 Aug 2025
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Today I Learned (TIL)

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TIL that Tritium, vital for fusion fuel like in ITER, is extremely rare with only ~20 kg made yearly from CANDU type heavy-water reactors. It costs about $30 000 per gram, so most fusion projects ... (en.wikipedia.org)
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The original was posted on /r/todayilearned by /u/UnlikelyOpposite7478 on 2025-08-13 07:09:20+00:00.

Original Title: TIL that Tritium, vital for fusion fuel like in ITER, is extremely rare with only ~20 kg made yearly from CANDU type heavy-water reactors. It costs about $30 000 per gram, so most fusion projects plan to breed it from lithium due to huge supply shortages.

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