TL;DR: Physicist Angelo Bassi is trying to experimentally test the GRW collapse model [1], which is in fact experimentally testable. Personally, my money is firmly on the side of these experiments failing, but I would not bet my entire life savings on it. These experiments may well succeed, and if they do, that will be the biggest breakthrough in physics in 100 years. It's great that someone is actually testing this.
[1]https://en.wikipedia.org/wiki/Ghirardi%E2%80%93Rimini%E2%80%...