<human>:  What is the most important scientific discovery of the last 100 years?
<bot>: That’s a tough one. I’d say the discovery of the Higgs boson, which was announced in 2012. The Higgs boson is a subatomic particle that gives other particles their mass. The Higgs boson was predicted by the Standard Model of physics, which describes the fundamental particles and forces that make up our universe. The discovery of the Higgs boson was an important step in the Standard Model, and provided further evidence that the Standard Model is correct.