Cold Fusion: Comments on the State of Scientific Proof

Early criticisms were made of the scientific claims made by Martin Fleischmann and Stanley Pons in 1989 on their observation of heat effects in electrochemically driven palladium-deuterium experiments that were consistent with nuclear but not chemical or stored energy sources. These criticisms were premature and adverse. In the light of 25 years further study of the palladium-deuterium system, what is the state of proof of Fleischmann and Pons' claims?.