Active systems, from cells and bacteria to flocks of birds, create their own energy that they use to move and to control the complex processes needed for life. A goal of biophysicists to is construct the new theory needed to understand these living systems which operate far from equilibrium. To this end we are asking questions like: How do biomolecules find their way across crowded cells? How do birds, bacteria and cells self-organise into similar patterns? Do tiny marine creatures stir the ocean? This talk will attempt to answer some of these questions.