Jonah Cool is a cell biologist and geneticist by training, and is currently a Science Program Officer at the Chan Zuckerberg Initiative, where he leads the organization's efforts to support the international Human Cell Atlas consortium. He was an American Heart Association fellow while completing his PhD at Duke Medical Center, with a focus on the role of vascularization during cell differentiation and organ morphogenesis, and was subsequently a Ruth Kirchstein Fellow at the Salk Institute studying nuclear organization during stem cell differentiation. Dr. Cool previously worked in intellectual property litigation, as well as ran an industry research group working toward therapeutic application of 3D bioprinted human tissue. He has a deep love of cell biology and, in particular, the origins of cellular heterogeneity and how diverse cells assemble into complex tissues.