Karnataka State Science and Technology Board will observe National Science Day 2013 at J.N. Tata Auditorium here on February 28. Based on the theme, “Genetically modified crops and food security”, the event will have talks by scientists. The former Vice-Chancellor of University of Agricultural Sciences Mahadevappa will inaugurate the event and deliver a talk. Renowned scientists Roddam Narasimha, B.N. Suresh, Ajay Sood will be honoured.