THURSDAY Prime Minister Costas Karamanlis to attend informal meeting of the European Council in Lisbon. To tomorrow. Students hold a protest rally at noon at the entrance to the University of Athens opposing the enforcement of an EU directive that they claim would undermine state universities and technical colleges. Agriculture Minister Alexandros Kontos visits Iraklion, Crete. Parliament launches dialogue on social security. The Network of European Cultural Capitals and Months hosts a symposium on «Productivity of Culture,» at 9 a.m. at the Zappeion Hall. Athens Mayor Nikitas Kaklamanis to make the opening address. For further details, log on to www.cityofathens.gr. Athens Mayor Nikitas Kaklamanis to award the City of Athens Gold Medal of Merit to Queen Sofia of Spain at noon at City Hall. The Center for Renewable Energy Sources (CRES) hosts the second international exhibition «Energy 2007 – Renewable Energy Sources – Energy Management and Saving,» at 2 p.m. at the Helexpo Palace in Maroussi. To Sunday. Tel. 210.614.1164 or log on to www.cres.gr. The first international exhibition Automation 2007 opens its doors at 2 p.m. at the Helexpo Palace in Maroussi and will run through Sunday. For further details, call 210.614.1164 or log on to www.leaderexpo.gr. FRIDAY The Pharmaceutical Association of Thesaloniki hosts the seventh Pharma Point exhibition at the Helexpo grounds in Thessaloniki. To Sunday. Tel. 210.721.4437 or log on to www.pharmapoint.gr. SATURDAY Prime Minister Costas Karamanlis to chair meeting of New Democracy central committee, at 10.30 a.m. at the Novotel hotel in Athens. PASOK leader George Papandreou visits Larissa prefecture. SUNDAY The Aristotle University of Thessaloniki hosts a conference on «Society and Mental Health,» at 10 a.m. at the old faculty of the School of Philosophy in Thessaloniki. Tel. 2310.997.158 or log on to www.auth.gr.