The Abdus Salam International Centre for Theoretical Physics (ICTP), in Trieste, Italy, promotes science in the developing world: <www.ictp.it/>. From 11/8-10/2010, they held a conference, "Science and Development for a Changing World", to celebrate their anniversary "ICTP after 45". This coincided with the 25th anniversary of the Dirac Medal -- awarded annually since 1985 to an individual or individuals who have made siginficant contributions to theoretical physics and/or mathematics. Several previous Dirac Medalists lectured during this celebration. They were introduced by students from ICTP, many in their national dress.
This portfolio celebrates the event in photographs. It contains a selection of images. For all images, see the other gallery, "ICTP 45+".