This week, Catriona tells us about exciting new developments in using chimaeric antigen receptor (CAR) T cells against all forms of blood cancer; and Chris shares what physics can tell us about hand clapping, particularly the best way to clap for measuring acoustics.Wellhausen et al. 2023 “Epitope base editing CD45 in hematopoietic cells enables universal blood cancer immune therapy”: https://doi.org/10.1126/scitranslmed.adi1145(See also https://www.pennmedicine.org/news/news-releases/2023/august/an-immunotherapy-strategy-against-all-blood-cancers)Papadakis & Stavroulakis 2020 "Handclap for Acoustic Measurements: Optimal Application and Limitations: https://doi.org/10.3390/acoustics2020015Fletcher 2013 “Shock waves and the sound of a hand-clap – A simple model”: http://www.acoustics.asn.au/journal/2013/2013_41_2_Fletcher_paper.pdfMann et al. 2013 “The dynamics of audience applause”: https://doi.org/10.1098/rsif.2013.0466