Konwersatorium im. Leopolda Infelda

It is known from observations that about 80% of the matter in the universe is composed of some form of non-luminous dark matter. However, the nature of the particles of which dark matter is composed remains a mystery. In this talk, I first explain the observational evidence for the existence of dark matter. I then consider some of the proposals that have been put forward to explain the nature of dark matter, and their implications for experiment. The primary focus is on recent developments that go beyond the framework of single component dark sectors.