Lorenzo Melchor is a science advice and science diplomacy practitioner who currently is coordinator in Ciencia en el Parlamento, a civil initiative movement in Spain supported by more than 3000 people and 180 institutions to promote science advice to the Spanish parliament by training science advisers, bringing together scientists and policy-makers, and producing evidence briefings. He has worked for the Spanish Foundation for Science and Technology (FECYT) as a science adviser for the Spanish Embassy in London from 2015 to 2018. Passionate about connecting science to public policies, he has been very active in science diplomacy being involved in the S4D4C consortium, coordinating two editions of “Ambassadors for Science”—an exchange scheme to connect scientists with diplomats and other civil servants, and running a science diplomacy course in Latinoamerica in 2017, among other actions. Lorenzo participated in the Royal Society Pairing Scheme in 2013, and is Founding President of the Society of Spanish Researchers in the United Kingdom (SRUK/CERU). He is a PhD in Molecular and Cellular Biology by the Universidad Autónoma de Madrid, who developed an international academic career on cancer genetics during 13 years in Spain, US, and the UK, with over 30 peer-reviewed articles.