When it's finished, the European Spallation Source in Sweden and Denmark will be the brightest neutron source in the world, opening up new frontiers for science in a broad range of fields. But building a giant facility like this takes decades of commitment from policymakers and scientists alike. In a political environment dominated by short-term thinking, how do we keep everyone on board to see this kind of project through to reality?

Pia Kinhult, Head of Host States Relations at the ESS and a former leading politician in Sweden, talks to Toby Wardman about keeping things sweet between science and policy at the frontier of world-changing — and expensive — materials science.

• European Spallation Source: https://europeanspallationsource.se/