Urbano Fra Paleo is a retired Professor of Human Geography from the University of Extremadura, Spain. He is a member of the European Science and Technology Group (E-STAG), United Nations Office for Disaster Risk Reduction (UNDRR); Honorary Research Fellow of the Alliance of Bioversity International and CIAT, Senior Research Fellow of the Earth System Governance Project, and Member of the Academia Europaea. Leonor Castiñeiras is a biologist with a PhD in Agricultural Sciences. She worked as Scientific Researcher leading the Plant Genetic Resources Unit at the Instituto de Investigaciones Fundamentales en Agricultura Tropical Alejandro de Humboldt (INIFAT) in La Habana, Cuba. She has coordinated various international projects in partnership with Bioversity International (formerly IPGRI) on the characterization of genetic resources with particular focus on traditional varieties and their seed systems.