Several examples of pullback attractors of non-autonomous dynamical systems are presented analytically and numerically. Parabolic partial differential equations may have finite-dimensional attractors. Discrete chaotic systems, such as the logistic map, can exhibit strange attractors whatever their dimensionality. Chaotic attractors are non-repeating bounded attractors that are continuously traversed. The attractors (stable fixed points) of the equations are equivalent with evolutionarily stable states. SRB measures replace the Boltzmann factor and they are defined on attractors of chaotic systems. Stable limit cycles are examples of attractors. Chaotic attractors (also called "strange attractors") have been hypothesized to reflect patterns in odor recognition. These line attractors, or "neural integrators", describe eye position in response to stimuli. Recent evidence suggests that cell types in humans and other organisms are attractors. Attractive fixed points are a special case of a wider mathematical concept of attractors. There were areas that were determined to be crime generators and others attractors. Grammar is made up of attractors and repellers that constrain movement in the state space. Remark that the attractors with noninteger Hausdorff dimension are called strange attractors. Traffic analysis zones are also destinations of trips, trip attractors.