Monday Foreign Minister Dora Bakoyannis to meet with French Agriculture Minister Michel Barnier. The US Embassy in Athens and its consular section will be closed today in observance of Columbus Day, a US national holiday. LAOS leader Giorgos Karatzaferis to meet with the Association of Civil Aviation Pilots (EXPA) at 1 p.m. The National Observatory of Athens in cooperation with the Eugenides Foundation hosts a conference on «Communicating Astronomy to the Public 2007,» at 9 a.m. at the premises of the Eugenides Foundation on Syngrou Avenue. To Friday. Tel. 210.659.7511 or log on to www.communicatingastronomy.org. Tuesday The municipal worker’s union POE-OTA meets to discuss strike action over financial and social security demands. Wednesday The national council of the municipal worker’s union POE-OTA convenes. The Social Security Foundation’s union (POSE-IKA) holds its 18th three-day congress at the Novotel Hotel. To Friday. Thursday The University of Athens in co-operation with the Greek Institute of Administrative Sciences hosts the second conference of Greek Administrative Scientists on «New Directions in Administrative Science: New Public Management, Corporate Social Responsibility and Citizens’ Society,» at the Department of Business Administration, University of the Aegean on Chios. To Saturday. Tel. 22710.351.20 or log on to www.ba.aegean.gr. The Aristotle University of Thessaloniki hosts the «Aristotle Vascular Experts’ Meeting,» at the Macedonia Palace Hotel in Thessaloniki. To Saturday. For details, log on to www.avem-meeting.gr. The Aristotle University of Thessaloniki in collaboration with the Thessaloniki Museum of Photography hosts an exhibition titled «The Image of the Scientist in Greece, 1900-1980,» at the Museum of Byzantine Culture in Thessaloniki. The exhibition will run through November 18. Tel. 2310.566.716 or log on to www.thmphoto.gr. The Ionian University is hosting the second international conference on «Metadata and Semantics Research,» at its facilities on Corfu island. To tomorrow. Tel. 26610.874.22 or log on to www.mtsr.ionio.gr. The Fulbright Foundation hosts the 13th US University Fair starting at 2 p.m. at the Athens Holiday Inn Hotel. Tel. 210.724.1811 or log on to www.fulbright.gr. The Embassy of Canada in Athens hosts a conference on «Studies in Canada,» at 7 p.m. at the Athenaeum Hilton Hotel. Tel. 210.727.3206 or log on to www.athns.qc.ca. Saturday Aglaia Kyriakou Children’s Hospital hosts a conference on «Current Developments and Opposing Opinions in Paediatrics,» at 9 a.m. at the King George Palace Hotel. Tel. 210.721.0001 or log on to www.congressworld.gr.