Scientific Explanation
The reported "excess heat" was measurement calibration errors and background noise misinterpretation. No significant nuclear fusion byproducts (neutrons, tritium) were detected.

The startup CEO who dreamed of infinite energy in a glass
A 40-something dreamer startup CEO. Gives grand presentations about "infinite energy in a glass" but lacks rigor. Replication attempts worldwide failed, concluded to be measurement noise misinterpretation.
Announced by Fleischmann and Pons. Denied within months when worldwide replication attempts failed.
The reported "excess heat" was measurement calibration errors and background noise misinterpretation. No significant nuclear fusion byproducts (neutrons, tritium) were detected.
A discovery without reproducibility is not a discovery. Also demonstrates the danger of press conferences before peer review. A case study in science's self-correcting mechanism.
Catchphrase“I'll make nuclear fusion happen in a glass!”
Palladium was used as the "electrode" for cold fusion. Dragged down when it couldn't be reproduced.
“パラジウムと重水があれば、核融合が起きる!…はず!”
“余剰熱を検出した!これは革命だ!…測定誤差?そんなはずは…”
“世界中が追試してくれた。…一つも再現できなかったけど”
“記者会見を先にやったのが間違いだった。論文審査の前に…”
“夢は大きかった。ツメが甘かっただけだ”
Everyone! I have an amazing presentation today! With one glass of heavy water, the world's energy problems...
Couldn't reproduce? No, the conditions are just demanding! Just a little more...
Cold Fusion: "Palladium! Let's try again! This time, nuclear fusion will..."
Palladium: "...Do you know how much my reputation was damaged by that experiment?"
Cold Fusion: "B-but! If we absorb enough deuterium..."
Palladium: "I'm an excellent catalytic metal. I contribute to society through exhaust purification and hydrogen storage. I can't participate in your irreproducible experiments anymore."
Cold Fusion: "...Palladium... you too give up on the dream?"
Palladium: "Dreams are important. But dreams without data are just delusions."
If it can't be reproduced, it's not science. No matter how beautiful the dream, without data it's just a phantom.
The press conference should have come after peer review. An unreviewed "great discovery" is an affront to the scientific community.