Monday Culture Minister Michalis Liapis to inaugurate a photo exhibition titled «Greece Today» and hosted by the Museum of Byzantine Culture in Thessaloniki. The exhibition is part of Photobiennale 2008, the 20th international photography meeting. Athens Mayor Nikitas Kaklamanis launches a green-bag pilot program in an effort to gradually replace plastic bags with environmentally friendly ones. The Institute of International Relations (IDIS) is hosting a round-table discussion on «Iran: International Developments and the War Against Terrorism,» at noon at its premises in Plaka. For details, call 210.331.2325 or log on to www.idis.gr. Diplomatia magazine is hosting the fifth annual congress on «Defense and Security in the 21st Century: Southeastern Europe-Balkans,» starting at 9.30 a.m. at the Hellenic Air Force Academy. Foreign Minister Dora Bakoyannis and High Representative for the Common Foreign and Security Policy Javier Solana will speak. To tomorrow. For details, log on to www.diplomatia.gr. The American-Hellenic Chamber of Commerce hosts the «Healthworld 2008» conference, titled «Developing the Healthcare System to Benefit Patients: Modernization and Clinical Studies,» at 9 a.m. at the Ledra Marriott Hotel. Health Minister Dimitris Avramopoulos will speak. For details, call 210.699.3559 or log on to www.amcham.gr. The Aristotle University of Thessaloniki hosts a conference on «Literature and Journalism: Uncertain Relation,» at 9.30 a.m. at the Thessaloniki History Center. For details, log on to www.auth.gr. Tuesday The American College of Thessaloniki is hosting a workshop on «Gender and Migration,» starting at 9.30 a.m. at its premises. For details, log on to www.act.edu.gr. UNHCR Greece holds an event dedicated to migrants, starting at 6 p.m. at Lavrion. The event includes a photo exhibition, theatre performance and stories from migrants. Health Minister Dimitris Avramopoulos will attend. For details, log on to www.unhcr.gr. The chairman and managing director of SKAI TV, Yiannis Alafouzos, holds a press conference to present a major television production titled «Great Greeks,» co-produced by SKAI TV and the BBC. At noon at the Theodoros Karatzas Amphitheater of the National Bank of Greece. Wednesday A conference on «Immigrants and mass Media,» begins at 12.30 p.m. at the Ianos Bookstore (24 Stadiou). The conference is part of the «Horizons» project. For details, log on to www.horizons-equal.gr. Thursday Health Minister Dimitris Avramopoulos to attend an informal EU health ministers meeting in Slovenia. To Friday. Easter shopping hours come into effect. Stores will be open from 9 a.m. to 9 p.m. daily. Mediterranean SOS Network is hosting a conference on «Building Eco-neighborhoods in the Mediterranean: Viable Cities and Local Governance,» starting at 9 a.m. at the Titania Hotel in Athens. For details, call 210.822.8795 or log on to www.medsos.gr. Friday United Nations mediator Matthew Nimetz is due in Athens for further talks on the Macedonia name issue. Prefectural headquarters across the country will be closed today as employees are due to stage a protest in front of the Fianance Ministry at 11 a.m.