Foreign Minister Petros Molyviatis leaves for the United States, where he will preside over a UN Security Council meeting on the Council's role in humanitarian crises. Greece currently holds the Council's rotating presidency. Molyviatis will also meet with UN Secretary-General Kofi Annan.

Alternate Culture Minister Fanni Palli-Petralia is on an official visit to China as a guest of Culture Minister Sun Jiazheng. To Friday.

Constantine Karamanlis Institute for Democracy holds a conference on «The Future of United Europe» at the National Research Institute, 48 Vas. Constantinou, at 7 p.m. Euro-MP Yiannis Varvitsiotis and professors Loukas Tsoukalis, Panos Kazakos, Constantine Yfantis and Constantine Arvanitopoulos will speak.

The Demokritos Center for Research in the Natural Sciences is holding its annual seminar series aimed at technical college and university graduates from today to July 22. For information, tel 210.650.3002, 210.650.3019.

International conference on «The Atlantis Hypothesis: Searching for a Lost Land» opens at the conference center of the island of Milos today and runs to Wednesday. Information on tel 210.973.0697.

Interior Minister Prokopis Pavlopoulos meets at 11 a.m. with civil servants' union President Spyros Papaspyros to open talks on collective labor agreements.

Retail stores on the island of Crete will be closed for trading today in protest of the government's operating hours reform plan.

Subscriptions for the sale of a further 16.44 percent stake of OPAP betting company begin. To Friday.

University of Crete hosts the second international conference on «Hands-On Science: Science in a Changing Education,» at the Rethymnon campus, until Saturday.

Communist-led PAME labor movement holds demonstration against job layoffs, at the Labor Ministry, Pireos St, 6.30 p.m.

Summer sales begin.

Fast train services begin on the Thessaloniki-Istanbul route.

The Med SOS environmental organization calls for volunteers to help in beach cleanup programs and for help in charting local flora and fauna on the island of Samothraki. For information, see www.medsos.gr