Prof Ashcroft attended the 1st ‘MITOchats’ Summer Symposium at the Max Planck Institute for Biology and Ageing in Cologne, Germany (http://sfb1218.uni-koeln.de/mitochats_2019symposium.html). Prof Ashcroft gave an invited talk entitled ‘Mitochondria and Hypoxia Signalling’. MITOchats was an excellent symposium with talks from outstanding international speakers.