"Ahu" are stone platforms on which many moai sit. There are 313 known ahu and 125 of these carry moai. The biggest, Ahu Tongariki is 220 m (720 ft), and had the most (15) and tallest moai.
I think it is that parents just don't kick their kids out the door as much as they used to. I think the demise of sandlot sports has had a lot to do with it.
You must pursue this investigation of Watergate even if it leads to the president. I'm innocent. You've got to believe I'm innocent. If you don't, take my job.