Market will resolve to yes if the author is convinced cold fusion is possible. Things which would change my mind on this topic: a paper published in a top journal for the mechanism behind the anomalous energy reactions found by Fleischman and Pons, with a model predicting how to control the reaction, and replications of said paper in other top journals. A working cold fusion generator which a commission of nuclear engineer's/scientists confirm actually works. Or a commercially succesful energy company claiming they use cold fusion, with a replicable patent. Or a real money prediction market with over $1 million dollars in it predicts cold fusion is posible with a price of >$0.95/share.

EDIT: This market will resolve to no via similair mechanisms for resolving yes e.g. papers showing the reactions aren't nuclear, liquid real money prediction markets on this question trading at $0.05/share etc.

Otherwise, the market will be unresolved.