Prof. E. Villenave has a full-time position of Professor of Atmospheric Chemistry at the University of Bordeaux (France). Since January 2012, he is the new Director of the “Observatoire Aquitain des Sciences de l’Univers (OASU)”, an observatory of both CNRS and the University of Bordeaux, counting in his perimeter around 500 researchers, engineers, technicians, PhD students and post-docs, working on different fields like air pollution, water pollution, environmental chemistry, ecotoxicology, paleoclimatology, oceanography, astrophysics, astronomy, etc. For the last 15 years, he has been involved mainly in mechanistic studies of radical reactions of tropospheric interest. More recently, he has developed new activities related to field measurements. He spent one year in 1996-1997 working at the National Institute of Standards and Technology (MD, USA). His group collaborates with several groups in France and Europe, and in United States, and has many PhD students and post-docs. He was involved in the French National Program on Atmospheric Chemistry, the French National Programme PRIMEQUAL on the Air Quality, has participated to 5 EU-project and has conducted many research projects during the last years. Prof. E. Villenave was also a member of the Scientific Committee of the French National Program on Atmospheric Chemistry; he has organized 4 national and international conferences and is the author or co-author of more than 50 peer reviewed publications and 110 communications. He has also headed during ten years the Master of Environmental Chemistry at the University of Bordeaux. Since 2009, he is chairing the French Group of Chemical Kinetics and Photochemistry and was acting the last 4 years for the Direction of CNRS as a project manager, following all the different activities and programs of atmospheric interest.