We live in a fast-changing world where everything seems to be interwoven with everything else. At the IAS, researchers from a wide range of fields work together on all kinds of complex scientific and societal challenges. We have organised our activities into four broadly defined domains, and two cross-cutting themes under which you can find a colourful array of projects and theme groups. The projects and themes change over time, but our foundations and methods programme remains. It is the core of the institute.