Scientists are again claiming they have made a Sun in a jar, offering perhaps a revolutionary energy source based on sonoluminescence.

Oak Ridge National Laboratory scientists used ultrasonic vibrations to shake a jar of liquid solvent. They squeezed tiny gas bubbles in the liquid so quickly and violently that temperatures reached millions of degrees and some of the hydrogen atoms in the solvent molecules fused, producing a flash of light and energy.

“Bubble Fusion,” Physics News Update, Number 675 #3, March 3, 2004

“Evidence bubbles over to support tabletop nuclear fusion device,” Purdue News