Carsten Marr is one of the leading computational stem cell biologists with a strong background in both image processing and quantitative data analysis and introduces CDS students in the course Basics of Selected Subjects from Science and Technology in the Second Semester to his research topics. Carsten Marr studied theoretical physics at the Technical University Munich and the Max-Planck-Institute for Quantum Optics and did his PhD in the Faculty of Biology at the Technical University Darmstadt. He joined the Helmholtz Zentrum München in 2008 and focussed on gene regulation and gene expression in mammalian stem cells. In 2013, he visited the Centre for Synthetic and Systems Biology at the University of Edinburgh and worked on bioimage informatics, stem cell dynamics and stochastic model inference. Since 2013, he is deputy director of the Institute of Computational Biology, Helmholtz Zentrum München and leading the research group on ‘Quantitative Single Cell Dynamics’. Carsten Marr’s research focus is the quantitative description of cellular decision processes. This comprises the application of machine learning methods for statistical data analysis, and the design of mechanistic models to describe population dynamics, regulatory processes, and epigenetic changes in biological systems. His work entails the close and intensive interdisciplinary collaboration with biological experts, which was recognized with the Schrödinger prize 2017 for his work on single blood stem cells.