On: US diplomats' brains were shrunk by sonic attacks at Cuban embassy, study finds

[emeraldd]

https://en.wikipedia.org/wiki/Sonochemistry I have no idea about that application, but the idea of using sound in chemistry seems to actually be a thing ...

[Canadauni → emeraldd]

At risk of oversimplification, sound is just energy and given the right amount of energy chemical changes can be carried out.