Sonofusion has already achieved more scientific respectability than cold fusion ever did, with two articles published in major journals.

And unlike cold fusion, sonofusion is based on known science. Scientists have long observed a phenomenon known as sonoluminescence, in which a burst of ultrasound causes a bubble in a liquid to collapse and emit a flash of light; some have speculated that the gases trapped in the collapsing bubbles could be heated to temperatures hot enough for fusion to occur.