"In the discussion on refugees, researchers can offer facts instead of irrational fear-mongering," says Fadumo Dayib, University of Helsinki doctoral student and candidate in the Somalian presidential elections. Global responsibility is one of the themes in this week’s Science for a Better World seminar marking the University’s anniversary year. In addition to the theme of global responsibility, the seminar will discuss health, the climate and digital teaching. The top names in science have been enlisted to provide answers to these major questions, including Nobel Prize in Chemistry winner Sir John Walker, a pioneer of molecular biology, and cosmologist Lawrence Krauss, who has received awards for his efforts to popularise science, as well as esteemed cancer researcher Kari Alitalo and the world’s most cited researcher in geosciences Markku Kulmala, from the University of Helsinki. Welcome!