Barnabé Crespin-Pommier is a writer and a Master’s student at Cergy Paris University, as well as an intern at Éditions LIBRE. He has previously completed a Master 1 in linguistics, co-accredited by Paris 3 and Paris 7, and was also awarded the 4th « Prix du Jeune Écrivain 2022 ». His research focuses on contemporary francophone medieval-fantastic fantasy. It is based on a corpus of two unfinished sagas: Les sentiers des Astres (Stefan Platteau) and Le Cycle de Syffe (Patrick Dewdney). Barnabé questions the contours of this genre and the creative processes of the authors, from world-building to putting a story into words. The creative part of his master’s thesis is the incipit of his first fantasy novel.

Jimmy Degroote is a PhD student in philosophy of science at the CNRS (ERC project "PHILIUMM") and at the SPHère laboratory (University of Paris). He holds a master's degree in political studies from EHESS and a master's degree in philosophy from the University of Panthéon- Sorbonne. He taught philosophy in high school for two years before turning to research. He is currently working on the problem of the applicability of mathematics to nature and is interested in the solutions that the philosophical and mathematical work of Leibniz allows to develop.

Marie Lacomme is a PhD student in philosophy of science at the Sphère laboratory (University of Paris). She holds a master's degree in philosophy from the University of Panthéon-Sorbonne. She has also studied evolutionary biology at the UPMC and the MNHN, and has done research internships in primatology (MNHN). Her research focuses on the place given to human beings in relation to other animal species, and in particular to other primate species, both in the natural sciences and in the humanities and social sciences.

Rachna Bhoonah has joined the Eco-design and Heat of Buildings team at Mines ParisTech for her PhD after a Masters in Renewable Energy at PSL University and a year as an eco-design consultant. The topic of her research is the life cycle assessment (LCA) of buildings, and, more precisely, health impacts related to indoor air quality (IAQ). There are several potentially toxic substances that are emitted from furniture, coatings or detergents to which we are exposed indoors. In order to reduce impacts on our health, it would be important to opt for less dangerous materials and design an optimal ventilation to evacuate pollutants. She is thus working on a decision-making aid that allows to consider IAQ when conducting LCA of buildings.

Tiphaine Lours is currently a master’s degree student at the School of Research of Sciences Po Paris. After completing a double degree between Sorbonne University and Sciences Po Paris in History and Social Sciences, and spending a year abroad in the Archeology Department of Univeristy College Cork in Ireland, she is now writing a thesis research at the crossroads of the history of medicine and the history of experimental sciences. With the financial support of the Comité pour l’Histoire de l’INSERM, it aims to explore the origins of surgical practices related to organ and tissue transplants during the 19th century in France. She is also starting an entrepreneurial project, with the creation of her knitting patterns’ brand available online.

Clino Trini Castelli industrial designer, artist and design theorist lives and works in Milan. Internationally known for CMF design (Color, Material and Finishes) of which he was the initiator, Castelli introduced the "No-form" renewal of plastic languages applied to industrial products through the tools of Design Primario. As opposed to traditional compositional methods, Castelli has focused on the design of the more intangible aspects of figuration, like material and color, light and sound, emphasizing the virtues of a sensorial approach to art and design. Since the early 1970s this has made him a pioneer in research on the emotional identity of products in the industrial sector. From 1978 to 1983 he conceived and directed Colorterminal IVI in Milan, the first center of research and services on the new RGB additive technologies. In 1983, alongside his activities of research and design, he was one of the founders of Domus Academy. Clino Castelli has continued his work in education, teaching in many international design schools and universities, including the Milan Polytechnic. He has published many writings and book on design culture, including articles for leading international magazines of art and design. His work has received important European, American and Japanese prizes, including two ADI Compasso d’Oro awards.

François Nawrocki is a curator, archivist and paleographer, with a doctorate in history. He is in charge of the Fonds et collections section of the Kandinsky Library (Centre Pompidou), which is responsible for the development and processing of archives and printed material relating to modern and contemporary art.

Jean-Philippe Lenclos, colour designer, visual artist, colour researcher, Professor Emeritus of the École Nationale Supérieure des Arts Décoratifs (EnsAD), and founder and former director of Atelier 3D Couleur in Paris was awarded the Ordre des Arts et Lettres as a Chevalier by the French Ministry of Culture for his significant contributions to the arts. He developed a ground-breaking methodology, The Geography of Colour, and has given invited lectures worldwide. His books have received numerous prizes and have been translated into several languages. His works have been exhibited in various countries and 170 of his works are included in the Collection du Centre Pompidou in Paris. Jean-Philippe Lenclos has inspired several generations through his example, excellency, and seminal contributions to the world of colour in urban planning and design, environmental colour design, architecture, industry, product design, art, research, and education. Lenclos received the AIC CADE 2021 Award for Color in Art, Design and Environment by International Colour Association.

Jian Ming Song studied at the Chinese Academy of Fine Arts, the Shanghai Institute of Foreign Languages, French language, and the École Nationale Supérieure des Arts Décoratifs, Paris. He is a full professor at the Chinese Academy of Fine Arts. In 1993 he established a Basic Color Theory and its systematic applications according to a set of standard color system. His research focuses on a customized service system for creative people to design products based on crowd-sourcing service. Since 2005 he has also been conducting research on urban color planning methods in China. He has established a Color Standard for Jiangnan style architecture. In the past 20 years, he has presided over hundreds of color plans for new and old cities, rural areas and islands, such as Beijing, Shanghai, Xi'an, Hangzhou, Chengdu TFNA, Chongqing, Jinan, Ningbo, Quanzhou, Wujin, Jiangyin, etc. He has also presided over the color design of the China Pavilion at the 2010 World Expo and a large number of public buildings, including the Hangzhou Metro and other large-scale park planning and design projects. He has published more than 150 articles on color and art in academic journals in Chinese and English, numerous books including Reading Macao Urban Color, Modern Design Department And Design Modeling Foundation, Color Design In France. He is the Chief Scientific Communication Expert of National Color Science of China Association of Science and Technology, Vice President of China Fashion Color Association, Vice Director of Graphic Design Art Committee of China Artists Association. He was Director of Art and Design, Hangzhou 2022 Asian Games Organizing Committee.

Colour specialist, colour designer in the textile industry, colouring of six oil refineries. Artist, Michel Albert-Vanel was a researcher at the Ecole Polytechnique de Paris in computer image, professor at ENSAD, founder of the Couleur-Lumière group, in charge of the theme of Light at the Cité des Sciences et de l'Industrie de La Villette. President of the Centre Français de la Couleur, he was a member of the AIC Executive Committee for 4 years. Founder of the French Federation of Colour, he is responsible for the realisation of La Boîte à Lumière - Machine to permute colours in the image -, the Grand Orgue Chromatique for the show. He has given more than 200 conferences throughout the world, and designed a television series broadcast in Quebec and the U.S.A. He is the author of numerous articles and books on colour, including "Système Planétaire des Couleurs" Color Messenger 2017, and "Des couleurs pour nos écoles", CFC and Ministère de l'Education.

Christian Courtois is an electro-mechanical engineer from ESME Sudria. After discovering the railway world at the SNCF, Christian Courtois was quickly involved in the field of electric traction, first in substations and power supply systems and then in catenaries. This allowed him to have a global and systemic vision of electric traction in connection with all its interfaces: motor equipment, energy suppliers, electrical compatibility with signaling and safety. More recently, the activity has turned towards European railway interoperability, with a strong standardization component, energy, the greening of railways with a view to replacing diesel traction with decarbonated energy vectors, and the improvement of existing systems by introducing innovations. For the past eleven years, Christian Courtois has been in charge of the electric traction department of the engineering department at SNCF Réseau, with a team of 135 people.

David Goeres joined the SNCF in 1999 as a TGV traction chain specialist. He then moved on to positions as technical manager for TGVs, which enabled him to work on all series of TGVs and on other European high-speed equipment. In 2015, he joined the TGV2020 program (now TGVM) as technical architect, then project manager. He is currently TGV M project manager. 23 years of experience at SNCF on TGV projects have enabled him to develop a recognized expertise in high-speed equipment.

Hugo Altinok is a student in a tri-national DUT in electrical engineering and industrial computing in Alsace, Germany and Switzerland. He has a strong interest in the railway field and its problems.

Jean-Marie Metzler, an X-Ponts engineer, has spent a large part of his professional life at the SNCF, where he joined in 1967. After his first operational positions in the regions (Equipment and Traction Establishment, Equipment Workshop, Operations Division), he joined the Equipment Department as head of maintenance for the SNCF's engine equipment, then for the construction and commissioning of the TGV Sud Est equipment. He then became director of the railway branch of the Jeumont-Schneider Group. In 1987, he took over the management of the SNCF's Passenger Division until 1994, when he became a marketing expert for the Italian railroads. In the meantime, he created the SNCF's telecom subsidiary, and in 1997 he led the entry of Vivendi-SFR into its capital. Managing Director of Cegetel SFR until 2004, he returned to the railways as an expert for SNCF International (Korea, Saudi Arabia, Russia ...), Keolis subsidiary of SNCF (UK, Germany ...). From 2017 to 2022, he returned to telecoms by actively participating in the work related to the digital transformation of the SNCF Group, through that of its telecommunications network.

Pierre Devalan is an engineer of the Conservatoire National des Arts et Métiers in mechanics. From 1966 to 2000, he was a structural calculation engineer at Bureau Véritas, then head of the Calculation Department and Strategy Delegate at Cetim. From January 2001 to September 2006, Pierre was in charge of Cetim's Program Agency, in charge of the R&D strategy, the allocation of R&D and transfer resources as well as the collaboration with scientific laboratories. Since October 2006 Pierre Devalan is a consulting engineer. He is an expert for the European Union, BpiFrance, the Walloon Mechanical Engineering cluster and the UIMM F2I innovation fund. He is a consultant for the Encyclopedia of Engineering Techniques for the treaties of Mechanical Engineering and Innovation Management. At the same time, he is the President of the French Association of Mechanics and a member of the High Committee of Mechanics. He is the author of the book "L'innovation de rupture, clé de la compétitivité" published by Hermès-Lavoisier in 2006.

Céline Fellag Ariouet is responsible for the Executive and Meetings Service at the BIPM. Trained as a historian, she first worked on hidden children during the Second World War. She is completing a PhD thesis in the history of science on "The International Bureau of Weights and Measures from 1875 to 1975", under the supervision of Martina Schiavon, Archives Henri Poincaré - Philosophie et Recherches sur les Sciences et les Technologies, UMR 7117 CNRS. She participates in several research projects and has published a dozen articles on the history of the Bureau International des Poids et Mesures, including "Charles-Édouard Guillaume, l'étalon et l'invar, une illustration des relations entre le Bureau des Longitudes et le Bureau International des Poids et Mesures" published in the collective work Le Bureau des Longitudes au prisme de ses procès-verbaux (2021) and "Marie Curie, the international radium standard and the BIPM" published in Applied Radiation and Isotopes, vol. 168, February 2021.

Jean-Philippe Uzan is director of research in theoretical physics at the CNRS. Specialist in gravitation and cosmology, he works at the Paris Institute of Astrophysics. He was deputy director of the Institut Henri Poincaré from 2013 to 2017. He has published more than a hundred research papers on many aspects of cosmology, from the most theoretical to the interpretation of the most recent observations. He received the Paul Langevin Prize (2010) and the prestigious Georges Lemaître Prize (2015). He has taught for several years at the École normale supérieure de Paris and the École des mines de Paris, as well as in international thematic schools. He has been collaborating with the University of Cape Town in South Africa for the past 15 years. In 2017, he publishes The Secret Harmony of the Universe and Big Bang in 2018.

Maguelonne Chambon is the R&D Director of the Laboratoire national de métrologie et d'essais (LNE). LNE leads French metrology, defining a national metrology strategy and coordinating a network of 10 laboratories at the highest scientific level in metrology (including laboratories at CEA, CNAM and the Paris Observatory). Since January 1, 2022, Maguelonne Chambon is also the new president of the EMPIR Committee (European Metrology Programme for Innovation and Research), and in fact one of the two vice-presidents of EURAMET.

Richard Davis has been an Honorary Senior Research Physicist at the International Bureau of Weights and Measures (BIPM) since 2010. He began his career at the National Institute of Standards and Technology (NIST, USA) in 1972 before joining the BIPM in 1990 as a Research Associate. He was Head of the BIPM Mass Section from 1993. Following his retirement, he continued to work as a consultant to the BIPM until the major revision of the International System of Units (SI) took effect on 20 May 2019. During his professional career, he had the opportunity to contribute to the reduction of experimental uncertainties of two useful constants (the Faraday constant and the Boltzmann constant). Currently the uncertainty of each of these constants is zero as a consequence of the revision of the SI in 2019. He was named Fellow of the American Physical Society (APS) in 1992 for his contributions to metrology.

Photo Credit: Olivier Ravoire