A black hole awakens and why some people avoid Covid: the week in science

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 theguardian.com/sciencepod