Cruelest disease you have never heard of. Its called frontotemporal dementia, or f. T. D. F. T. D. Is the number one form of dementia in americans under the age of 60. I was washing my hands, and i looked in the mirror, and i did not recognize my own face. Didnt recognize yourself. No. I looked in the mirror, and i kept looking, and i remember i kept looking at this woman, wondering, who was she . ticking Mark Bradford is widely considered one of the most important and influential artists in america today. His abstract canvases, which often deal with complex social and political issues, hang in major museums around the world. Thats all right. That is all right. Its like an archeological dig. It is like an archeological dig. Its like history. Im creating my own archaeological or psychological digs. Sometimes, when im digging on my own painting, im asking myself, well, exactly what are you digging for . Where do you want to go, child . ticking im lesley stahl. Im bill whitaker. Im anders