An anonymous reader writes "The italian economic journal "Il sole 24 ore" published an article about a successful cold fusion experiment performed by Yoshiaki Arata in Japan.
They seems to have pumped high pressure deutherium gas in a nanometric matrix of palladium and zyrcon oxide.
The experiments generates a considerable amount of energy and they found the presence of Elium-4 in the matrix ( as sign of the fusion ).
Here are the articles: first second( in italian ). I was not able to found other articles about this but the journal is very authoritative in Italy.
Google translations: first, second."