Itay Tirosh obtained his BSc from Ben-Gurion University and his PhD from the Weizmann Institute of Science, both in the area of computational biology. From 2012 to 2017 he was a postdoctoral fellow at the Regev and Golub labs at the Broad Institute of MIT and Harvard, and since August 2017 he has been a Senior Scientist at the Weizmann Institute of Science, Dept. of Molecular Cell Biology. The Tirosh lab is combining computational and experimental methods to study human tumors as a complex ecosystem in which diverse cancer and non-cancer cells interact and collectively determine tumor biology and response to therapies. They leverage single cell technologies, computational approaches and clinical collaborations to understand the diversity of cells within human tumors, the mechanisms that maintain this diversity and the implications for cancer therapy.