Margaret Talbot talks to Blake Eskin about imagery-rehearsal therapy, which helps patients to edit their nightmares into more benign dreams; why your great-grandparents may have dreamed in black-and-white; and how evolutionary biologists explain nightmares.
Read more: http://www.newyorker.com/online/2009/11/16/091116on_audio_talbot#ixzz0WqdBZ3UG