Three years on: are we any closer to understanding long Covid?
b'Ian Sample hears from Scotland\\u2019s Astronomer Royal Catherine Heymans about her experience of long Covid and how it has impacted her life. He also speaks to Professor Danny Altmann, an immunologist at Imperial College London, about the current scientific understanding of the condition, and whether we\\u2019re any closer to a treatment.. Help support our independent journalism at theguardian.com/sciencepod'