A physicist in Italy claims to have demonstrated a new type of power plant that provides safe, cheap and virtually unlimited nuclear power to the world, without fossil fuels or radiation concerns. The only hitch: Scientists say the method -- cold fusion -- is patently impossible. They say it defies the laws of physics. Andrea Rossi doesn't seem to care. He told FoxNews.com that his new device takes in nickel and hydrogen and fuses them in a low-grade nuclear reaction that essentially spits out sheer power, validating the strange science. With low energy, it's possible to give a heater a certain amount of energy and to get from the same heater a superior amount of energy," Rossi explained. He claims he demonstrated the device, called an E-Cat, at the University of Bologna in Italy on Oct. 28. Nearly a century ago, in the 1920s, Austrian scientists Friedrich Paneth and Kurt Peters hypothesized a form of nuclear reaction that doesn't produce radiation. And since then, the theory of cold fusion -- or "low-energy nuclear reaction," as its champions now call it -- has popped in and out the public's eyes, notably hitting the cover of Time magazine in 1989. Sterling Allan, CEO of the alternative energy news agency Pure Energy Systems, told FoxNews.com he attended Rossi's demonstration and the E-Cat is self sustaining.