Irina Bokova (6th R), Paris-based UN Educational Scientific and Cultural Organization (UNESCO) Director-General, poses for photos with the winners of L'Oreal-UNESCO for Women in Science 2013, in Paris, France, March 28, 2013. The award ceremony of L'Oreal-UNESCO for Women in Science 2013 was held in Paris on Thursday. (Xinhua/Gao Jing)

The award ceremony of L'Oreal-UNESCO for Women in Science 2013 is held in Paris, France, March 28, 2013. (Xinhua/Gao Jing)

Irina Bokova (L), Paris-based UN Educational Scientific and Cultural Organization (UNESCO) Director-General, speaks during the award ceremony of L'Oreal-UNESCO for Women in Science 2013, in Paris, France, March 28, 2013. The award ceremony of L'Oreal-UNESCO for Women in Science 2013 was held in Paris on Thursday. (Xinhua/Gao Jing)

Irina Bokova, Paris-based UN Educational Scientific and Cultural Organization (UNESCO) Director-General, speaks during the award ceremony of L'Oreal-UNESCO for Women in Science 2013, in Paris, France, March 28, 2013. The award ceremony of L'Oreal-UNESCO for Women in Science 2013 was held in Paris on Thursday. (Xinhua/Gao Jing)