The 15-part, 15 1/2-hour "The Century: America's Time" airs on cable's the History Channel.Seeds of Change (Monday, April 12, 7 and 11 p.m.): How advances in technology transformed America and the world (1900-1914)/
Shell Shock (Monday, April 12, 8 p.m. and midnight): The horrors of the Great War -- World War I (1914-1919)/
Boom to Bust (Tuesday, April 13, 7 and 11 p.m.): A look at the changing face of America after World War I (1920-29)/
Stormy Weather (Wednesday, April 14, 7 and 11 p.m.): A look at America mired in the Great Depression (1930-39)/
Over the Edge (Thursday, April 15, 7 and 11 p.m.): Americans watch as Europe again drifts into a war (1936-41).
Civilians at War (Friday, April 16, 7 and 11 p.m.): The transformation of America from Depression to war (1936-45).
Homefront (Monday, April 19, 7 and 11 p.m.): A look at World War II from the perspective of both combatants and noncombatants (1941-45).
Best Years (Tuesday, April 20, 7 and 11 p.m.): America adjusts to peace and its status as a superpower (1946-52).
Happy Days (Wednesday, April 21, 7 and 11 p.m.): A look at the Eisenhower era (1953-60).
Poisoned Dreams (Thursday, April 22, 7 and 11 p.m.): A look at the JFK administration -- and the hope that was cut short by his assassination. (1960-63).
Unpinned (Friday, April 23, 7 and 11 p.m.): The struggle for Civil Rights, campus unrest, the escalation of the Vietnam War and the assassinations of RFK and Martin Luther King Jr. (1964-68).
Apocalypse Now (Monday, April 26, 7 and 11 p.m.): The election and eventual fall of Nixon and America's disentanglement from Vietnam. (1969-75).
Starting Over (Tuesday, April 27, 7 and 11 p.m.): Energy shortages, inflation, economic troubles, near nuclear disaster and the Iran hostage crisis (1976-81).
A New World (Wednesday, April 28, 7 and 11 p.m.): Reagan, recession, Wall Street, corporate takeovers, the space shuttle, AIDS, terrorism and the eventual end of the Cold War (1981-89).
Machine Dreams (Thursday, April 29, 7 and 11 p.m.): Events include the rise of the Internet, the Gulf War, the Oklahoma City bombing, the death of Princess Diana and the rise of the cult of celebrity personalities (the 1990s).