Marathon Fusion, a San Francisco-based startup, claims to have converted mercury into stable gold using fusion-generated neutrons, at a rate it says is 10 times the record set by CERN in 2025. The company has not disclosed how much gold its experiment produced, leaving the scale and commercial potential of the claimed breakthrough unclear.
In a post on X that garnered 6.5 million impressions, the company said it had demonstrated high-rate alchemy by turning mercury into real, stable gold, surpassing CERN's record by a factor of 10.