Ian Sample and science correspondent Hannah Devlin discuss some of the science stories that have made headlines this week, from a glimpse of a black hole awakening, to a new blood test that can detect Parkinson’s seven years before symptoms appear, and a study exploring how some people manage to avoid Covid infection. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>