Stephane Kena-Cohen, Polytechnique Montréal (IMAGE) Polytechnique Montréal Caption This is professor Stephane Kena-Cohen of Polytechnique Montreal. Credit Polytechnique Montreal Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.