How does global warming warming effect old ruins?



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         Global warming is affecting archaeological sites around the world. Rising sea levels threaten coastal sites; increased rainfall causes erosion; desertification exposes sites to the elements. Scythian tombs in Siberia that were perfectly preserved by permafrost for 3,000 years are now in danger of thawing and then rotting. The ruins of Musawwarat es-Sufra in Sudan are being destroyed because desertification leads to more wind erosion. There are many examples, and archaeologists are racing to document these sites before they are destroyed. They are also taking steps to preserve sites by doing things like setting up roofs over sites vulnerable to erosions and planting trees as windbreaks.  




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