Mexico City, Oct 7 (EFE).- Mexican scientist Mario Molina, who won the Nobel Prize in Chemistry in 1995 for his studies on the ozone layer, died Wednesday, the National Autonomous University of Mexico (UNAM) announced. He was 77.UNAM, Mexico's top university, reported "the regrettable passing of Dr. Mario Molina" on the social networks.(Camera: MIGUEL ANGEL ANDRADE)SHOT LIST: B-ROLL ARCHIVE OF MEXICAN SCIENTIST MARIO MOLINA.