Air quality specialist for more than 25 years and doctor in chemistry of atmospheric pollution, Pascal first created TERA Environnement in 2001. All of the research work carried out or supervised by Pascal relates to the quality of air and its societal implications. In 2010, Pascal initiated development work on real-time air quality measurement sensors. It was in 2012 that he created the industrial group TERA Group by incorporating into the historical activity (Tera Environment) a digital and digital activity (EcoLogicSence).