Extra Credit: Tune In
The Discovery Channel presents "The Nature of Things: Memory--The Past Imperfect.'' The one-hour Assignment Discovery episode looks at what memory is; how people use it to classify, store, and receive information; and how it is subject to influences and distortions. Air time: 9 a.m. (EST).
The Turner Broadcasting System Superstation airs "Seeking Sanctuary: America's National Wildlife Refuges,'' a one-hour World of Audubon Special. Actress Mariel Hem- ingway travels from Idaho to Washington, D.C., to see refuges designed to protect such endangered species as manatees and bald eagles. The show also explores the forces that threaten these creatures, such as oil drilling, hunting, and jet skiing. Air time: 10 p.m. (EST).
The Discovery Channel presents "Invention: Leonardo's Legacy.'' This Assignment Discovery segment looks at the influence Leonardo da Vinci-- inventor, engineer, architect, writer, and painter--has had on the arts and sciences. Air time: 9 a.m. (EST).
CBS offers "Love in the Dark Ages,'' a one-hour Schoolbreak Special that examines the topics of sexually transmitted diseases through the experience of a teenage couple who decides to become sexually intimate. Air time: 4 p.m. (EST).
The Arts & Entertainment Network presents "Temples of King Solomon,'' a one-hour special on the controversy surrounding the origin of Zimbabwe's great Stone Temples, believed to have been built as early as the 13th century A.D. Air time: 7 a.m. (EST).
The Arts & Entertainment Network airs "Suffragette Movement: The Female Rebellion,'' as part of its salute to Women's History Month. The one-hour documentary includes original film footage of the battle for women's voting rights and discusses changes in women's societal roles since World War II. Air time: 7 a.m. (EST).
The Learning Channel airs "Underwater World,'' a onehour Elementary School segment that explores the ocean's depths and looks at such underwater creatures as the shark, hermit crab, and octopus. Air time: 4 a.m. (EST).
PBS presents "In the Game,'' a one-hour Frontline documentary that profiles the Stanford University women's basketball team and coach as they set out to win the national championship. Air time: 9 p.m. (EST).