Cold fusion is one of those topics that just keeps coming back, most recently as reported in an article in Naturwissenschaften. Frank Gordon of the US Navy's Space and Naval Warfare Systems Center in San Diego and colleagues have reported new evidence for low-energy fusion in a palladium-deuterium film deposited on nickel. Not only do they get significant rises in temperature, but they find what seem to be nuclear tracks in CR-39, the etch-track detector familiar to particle physicists! Is there something interesting going on? Time and more experiments should eventually find out.