Editor’s Note
This article discusses a bold claim by a fusion energy startup. While the prospect of transmuting elements captures the imagination, such assertions require rigorous, independent scientific verification. We present this report as a developing story from the frontiers of research, not as an established fact.

A shocking claim has emerged in the world of science and technology. Marathon Fusion, a fusion energy startup based in San Francisco, USA, has stated that it has discovered a technology that can turn mercury into gold. Yes, the same gold that attempts have been made to create for centuries through ‘alchemy’ – scientists now believe it can become a reality with the help of nuclear fusion.
Marathon Fusion explained in its research paper (which is not yet peer-reviewed) that it has used Nuclear Transmutation. This involves removing protons from the nucleus of an element to transform it into another element. Under this process, the company converted the mercury isotope Mercury-198 into Mercury-197, and then this isotope gradually transformed into Gold-197.
Marathon Fusion claims that this gold-making process does not affect fusion energy generation. This means that electricity will continue to be generated from the fusion reactor, and alongside, approximately 5,000 kilograms (about 11,000 pounds) of gold will also be produced annually. This could lead to double earnings for the company – one from selling electricity and the other from gold.
The gold produced by this technology will be completely stable, but it may contain some radioactive elements. Therefore, the company believes this gold will need to be stored safely for 14 to 18 years before it can be used safely.
Marathon Fusion says that with this technology, not only gold, but also palladium, medical isotopes, and parts for nuclear batteries can be produced. If this technology succeeds, a fusion plant could become not just a source of electricity but also a factory for precious metals.
For now, all of this is based on a concept and preliminary research. Implementing fusion energy on a large scale remains a challenge. However, if Marathon Fusion’s claim proves true, it could transform not only the energy sector but also the gold and medical industries.
Yes, Marathon Fusion claims that mercury can be converted into gold through nuclear transmutation, but this research is still in its early stages.
No, it may contain some radioactive elements, so it might need to be stored for 14–18 years.
Marathon claims this will not affect the power output of the fusion plant.
Yes, the company says expensive materials like Palladium and medical isotopes can also be produced with this technology.