A new report from UNESCO (United Nations Educational, Scientific,and Cultural Organization) details how 26 World Heritage sites could be affected by coming climate changes. The 26 examples, which are meant to be representative of therange of threats to the 830 sites inscribed in the World Heritage List, are divided into five types: archaeological sites, glaciers, historiccities and settlements, marine biodiversity,and terrestrial biodiversity. Some of the examples include the Great Barrier Reef, which is expected to experience more frequent episodes of coral bleaching; Timbuktuin Mali, threatened by desertification; and the Chavin Archaeological Site in the Peruvian Central Andes, one of the earliest and best-known pre-Columbian sites, which flooding. The report, “Case Studies on ClimateChange and World Heritage,” is availableat http://whc.unesco.org/documents/publLclimatechange.pdf