Markus, Ruth, Gisela and Tracy are excited to announce ISTA 20, which will take place in Saskatoon, Canada between August 15 and 18, 2022.  The meeting will be held, in person, at the University of Saskatchewan with support from the university and the Toxicology Centre, the largest university-based toxicology program in Canada.  We are planning great science and many exciting events for you that we will announce soon.  We also will remember and honour Doris Au, at this conference that she supported and loved so much. To help us planning, we ask that you let us know (preferably by November 12) whether you, your students as well as your colleagues are planning to attend.