Is there such a thing as free will? In the latest online poll of our Science fiction, science fact project you told us that you'd like an answer to this question. So we went to speak to philosopher of physics Jeremy Butterfield, quantum physicist Anton Zeilinger, cosmologist and mathematician George Ellis and mathematician John Conway to find out more. We also bring you an article from FQXi who are our partners on this project. Happy reading!
And don't forget to vote for the next question you'd like to have answered!