Syksy Räsänen is a cosmologist at the University of Helsinki. He has earlier worked at the University of Oxford and CERN, among other places. He writes a blog, newspaper column and popular articles about science, and often gives public talks. He has co-scripted a circus show about the history of the universe, and is currently working on a children’s book about the topic. As an activist, he is involved in the struggle against Israeli apartheid and for equal rights in Israel/Palestine.