On the occasion of the International Year of Chemistry, the Tunis Science City organised a lecture entitled Chemistry without frontiers which was given by Pr. Naceur Ayed. The International year of Chemistry was celebrated worlwide in 2011. In France for instance, one  tackled issues such as genesis of modern chemistry, Chemistry in our everyday life, Chemistry and food, chemistry and sea, chemistry and art, chemistry and taste, chemistry and environment, chemistry and energy…