Rossi Cold Fusion

Here's what they wre willing to say about how they did it.
First the diagram:

Click to enlarge or follow the links. You will note the notations are in Italian.
Top to bottom, left to right,
1. Input and output of gas, normally Hydrogen (H2)
2. Insulation jacket.
3. Thermocouple, type K
4. Thermistor, Platinum PT100.
5. Cylinder or foil of Nickel on surface of which occurs the phenomenon of heat emission.
6. Cylinder with ceramic heating element.

Not labeled, but inferred from the article is a heating element or electrode running through the center of the device.

Story from Forbes who are as usual cautiously optimistic. Aren't we all. It would be nice if this thing actually worked but we've seen promising stuff fail to deliver before. Here's a picture form the Forbes article showing the device in test demonstrating a merry glow:

Rossi claims that cold fusion works but the word "cold" is a relative term and a modest amount of heat is required to get things going.

Energy output from fusion reactions is normally in the form of neutron emissions. I notice there is no shielding on this. Peer review is presumably forthcoming, so we'll see. In the meantime there should be enough information here for all you budding Mad Scientists to start assembling your reactors in your basements. If your hair falls out and you begin to look like Lex Luthor, you'll know you made it work. Good Luck.