Cryo-EM plays a crucial role in the field of catalysis for several reasons: 1. Structural Insights: It provides detailed structural insights into catalysts at atomic or near-atomic resolution, which is crucial for understanding how catalysts work. 2. Dynamic Studies: Cryo-EM can capture different states of a catalyst during a reaction, helping to elucidate reaction mechanisms. 3. Material Science: It aids in the study of complex materials and nanostructures used in catalysis, which are often difficult to analyze with other techniques.