A great friend of Africa and the LAMNetwork is gone. Here we are going to post a special issue of the ICO (International Commission for Optics) Newsletter dedicated to the memory of Professor Gallieno Denardo. 

• A great loss, By Maria L Calvo, ICO secretary
• Compassionate, generous and a man of great vision, By Katepalli R Sreenivasan, ICTP director and Abdus Salam honorary professor
• Many scientists have benefited from ICO-ICTP links, By Anna Consortini, ICO past-president (1997-1999)
• Denardo created TSOSA to support developing countries, By Anthony M Johnson, director, Center for Advanced Studies in Photonics Research, University of Maryland Baltimore County; OSA past-president (2002)
• African scientists have lost a great friend and supporter, By Ahmadhou Wagué, LAM Network coordinator and president
• Denardo was awarded the SPIE Educator award in 2005, By Maria J Yzuel, SPIE vice-president (2005)
• A champion of optics development in Latin America, By Angela M Guzman, TSOSA chair, ICO vice-president