Ph.D. years at CERN, followed by a CERN fellowship in the theory group (1981-82), postdoc in Berkeley, hired in CNRS in Annecy, moved to Paris Orsay as professor in 1990, changed to Paris Universite Paris Dideot in 2004 to become director of APC laboratory in 2005 (AstroParticle Cosmology). Scientific interest evolved from particle theory (Grand Unification, supersimmetry) to cosmology and astroparticle theory (inflation, extra dimensions, gravitational waves).