the bones in his feet. real quick, let me show you. as you look at this, look at the quality of these images. this is acting up on me. sorry about that. when you look at that, again, these are actual cat scans. what you're seeing there is some extra joints in here and some necrosis or sort of eroding of the bone. can you get an idea of how that looks up there as well. that would have been very painful. that may have caused him to have difficulty walking. and it may have also been the reason that in so many images that you see of king tut, the 19-year-old king, he was often sitting. but again, 3,000 years ago, look at the level of detail. >> what's the value of doing a study like this? other than the morbid curiosity, people want to know these secrets from the grave. but there is value to this. right? >> there is certainly a sort of "gee whiz" nature to this. king tut was preserved so well that you can do studies like that on him.