In 2010, Gerda Saunders learned that she has dementia. She was 61 years old at the time, and soon had to leave her post teaching at the University of Utah. So, Gerda started writing what she calls her field notes on dementia. She said she wanted to be like an anthropologist documenting a tribe. The result is a memoir. It’s called Memory’s Last Breath , and in it Saunders examines what losing her memory is doing her identity. Tuesday, we're rebroadcasting an interview with Saunders about her book