While the natural sciences try to quantify and describe the natural world, the role of the social sciences is to understand people — including their many different attitudes, values and worldviews. This perspective is complex, but it is vital for policymakers, since policy directly engages with people. And, as Professors Peter Jackson and Marta Rivera Ferre argue, the way you frame a question can lead to radically different answers — even though different framings are equally valid. How does science advice help to meet these challenges?

• Evidence Review Report and Scientific Opinion on a sustainable food system: https://www.sapea.info/food