Edinburgh is a heritage gem,
but will climate change kill its sparkle?
"When world leaders meet in Copenhagen to discuss climate change, one aspect they are unlikely to touch upon is how it affects world heritage sites. But just because it's not on the agenda, doesn't mean it's not an issue.
"Across the globe, almost 900 cultural and natural gems officially bear the UNESCO World Heritage title. In addition, there are innumerable other sites which have stood the test of time for long enough to be deemed historically valuable.
"As much as ancient architecture and archaeological remains are a source of national pride, they are also a wellspring of worry. Vulnerable to the elements at the best of times, old buildings are potentially at risk from the changing nature of the global climate."