What's going on in Luxor?

We all know that the "mansions of millions of years", the tombs and temples built by the ancient Egyptians that were meant to last forever, are seriously threatened -- and have been for a long time now. Among the many causes are subsoil water seepage, infrastructure development, unrestricted housing, and that greatest menace of all -- tourism. Fifty years ago fewer than a hundred visitors a day visited Luxor's magnificent monuments. Now there are as many as 9,000, and they are largely responsible for rapid changes in temperature and humidity levels in the tombs.