Prof. Abel Idowu Olayinka from the University of Ibadan, Nigeria, is currently a guest at our institute. He has received a research grant from the Alexander-von-Humboldt Foundation for a 3-month guest stay, which he started at the beginning of March. He is doing research here on geophysical applications to urban agriculture and together with the research group "Applied Geophysics" he is evaluating geophysical measurement data that he measured at a test site in Nigeria. We are happy about the collaboration and wish him a productive time at IGEP.