Johannes Keizer has more than 20 years of experience in working with science data. After his PhD in Biology he founded in 1994 “Knowledge Brokers” and contributed to some important Italian Science data projects (“Registro Nazionale Gaucher”, “Archivio Stanislao Cannizzaro”, “Banca Dati sui pesticidi in Italia”). While serving at FAO, he created the Pesticide registry for the Rotterdam convention, and was responsible for AGRIS (“International Information System on Agriculture Science and Technology”) and AGROVOC and brought these traditional documentation tools into the Semantic Web World. He currently works with the GODAN (“Global Open Data in Agriculture and Nutrition”) Secretariat and is responsible for strategic partnerships. He has published more than 100 papers in scientific journals.