Your team has found the city of Giza, Egypt. You gaze out across three tall pyramids built as royal tombs more than 4,000 years ago. As your team is crossing the desert to get to the base of largest Pyramid, the stones beneath your feet begin crack. An archaeologist tells you, “The pharaohs called these the temples of a million years; they were meant to last forever. Recently, erratic weather, like extreme heat, causes bricks to expand and crack and now rain can fall so furiouly that it makes dents in the mud bricks. We are trying to find and document everything . . . If worse comes to worse we will have a record of what’s been lost”