The typical case is characterized by a sudden, complete inability to retain new information, lasting for several hours, in a middle-age or older person, with preservation of alertness and all other ...

PBS has unveiled its summer programming slate, including a number of documentaries spanning history, science, culture and the arts and anchored by the celebration of America’s 250th anniversary.

Long dramatized in movies and novels, amnesia refers to a profound loss of memory that’s temporary, permanent, or progressive (gets worse over time). Depending on the type and cause of amnesia, the ...