Someone has come up with a plausible theory for how it might work (yes the phenomenon is real). A new state of hydrogen linked in a covalently bonded chain called a hydroton.
ColdFusionNow youtube channel
This site features a library of papers on LENR, Low Energy Nuclear Reactions, also known as Cold Fusion. (CANR, Chemically Assisted Nuclear Reactions is another term for this phenomenon.) The library includes more than 1,000 original scientific papers reprinted with permission from the authors and publishers. The papers are linked to a bibliography of over 3,500 journal papers, news articles and books about LENR.