Molecules in our cells are in constant motion. Many of them act as tiny machines and carry out a delicate choreography to achieve their tasks. To understand the basic processes of life, we must observe and reconstruct this molecular motion. We can take detailed, atomic-level photographic images, but this is not enough. We need to interpret these images as 3-dimensional structures, and then as sequences that follow their motions as they evolve to carry out their work. In this lecture, Axel Levy will explain how we construct these sequences, applying artificial intelligence to databases of millions of images to capture the fine details of the dances of molecules in action.