Bernard Castaing is a professor at the École Normale Supérieure (ENS), Lyon. He received his Ph.D. in 1978 under Albert Libchaber at the ENS. He was professor at the Joseph Fourier University, visiting professor at the James Franck Institute in Chicago, and has directed the Institut de Physique de la Matière Condensée in Grenoble. He has carried out extensive research in condensed-matter physics and hydrodynamics, including the study, both experimental and theoretical, of Rayleigh–Bénard convection, electron-phonon interaction in metals, turbulence, and superfluid helium. Among various honors, he was a recipient of the IBM prize (1984) and was appointed Member of the French Academy of Science in 2003.