Now that we are almost at the end of the year, we propose you an interesting article by Focus. “The General Assembly of the United Nations has proclaimed 2015 the International Year of light and light-based technologies. The aim is to raise awareness on the essentiality of light as an energy source, in the development of education, telecommunications, health, agriculture and, therefore, promote research on new technologies. From photosynthesis to optical fiber, from the study of the Universe to diagnostic imaging in medicine: light is the basis of our civilization. “We hope that 2015 can really be a year lit for sustainability and innovation.