(FILES) A part of an ancient column in the archeological site of Olympia stands in front of the charred ancient hill of Kronos, 24 November 2007. Greek and international scientists visited the World Heritage site to deliver funds for reconstruction of the area. A large replanting effort is under way ahead of March 25, when the flame-lighting ceremony for the Beijing Olympics will be held at the birthplace of the ancient games. From 2022 to 2025, scientists at the National University of Athens and the National Hellenic Research Foundation examined past and present climate and geological conditions at the 19 sites, looking at prior damage to help determine future vulnerability to extreme events. The sites under scrutiny include Olympia, habitually threatened by forest fires, the ancient theatre of Delphi, where rockslides are a concern. (Photo by Aris MESSINIS / AFP via Getty Images)