Thermoacoustic cooling sounds like science fiction at first glance. Cooling something with sound feels almost unreal, yet the physics behind it is solid and surprisingly elegant. In this episode of Breakthrough Broadcast, Drew takes listeners inside a technology that replaces chemical refrigerants with nothing more than sound waves, carefully shaped tubes, and a clever understanding of how heat moves through air. The story begins with the strange early experiments that hinted at this effect long before anyone understood it. Then it moves into the modern breakthroughs that turned a scientific curiosity into a real engineering tool.