For years there was no federal law to protect the shrinking wilderness from encroaching industry and tourism, until three men dedicated their lives to finding a remedy. Robert Marshall, Aldo Leopold, the prophet of the modern environmental movement, and Howard Zahniser struggled for decades to create a permanent system of federally protected wilderness areas. The fruit of their efforts, the Wilderness Act, passed in 1964.

When "Ishi," the last surviving member of a small Indian tribe, walked into the small California town of Oroville in 1911, he became a media curiosity and scientific "specimen." The San Francisco Museum built a Yahi house where audiences could watch Ishi make arrowheads and shoot bows. Ishi went to the theater and received invitations of marriage. But contact would bring him terrible physical and psychological consequences.

Chronicling the epidemic of the Spanish flu in 1918, which claimed “more than 600,000 lives.” Included: futile attempts to develop a vaccine; and how the virus spread to Europe.

The duel between Alexander Hamilton and Aaron Burr, narrator Linda Hunt says, was an 1804 gunfight between “the founder of American capitalism and the first modern American politician.” Included: profiles of Burr (1756-1836) and Hamilton (1757-1804), and sketches of the political differences between them. In the Nation's early days, the political parties had not yet taken root and, as historian Joanne Freeman puts it, “the political and the personal mixed in.” Voice of Hamilton: Rene Auberjonois. Voice of Burr: Brian Dennehy.

A two-part profile of Woodrow Wilson in which news clips, atmospheric re-creations and readings (Rene Auberjonois and Blair Brown provide the voices of Wilson and his first wife, Ellen) supplement interviews with historians. Part 1 takes Wilson (1856-1924) from his Georgia childhood to the outbreak of World War I -- just as Ellen dies. "He's got to deal with the breakdown in the world," historian John Milton Cooper says. "And he's got to deal with the breakdown in his personal life."

Woodrow Wilson reluctantly enters World War I in an effort to "make the world safe for democracy" as this two-part profile concludes. He wins the war but loses the peace, as he's confounded first by the French and British at the Treaty of Versailles in 1919; then by the Republicans in the Senate, who thwart U.S. entry into the League of Nations. Meanwhile, Wilson marries Edith Bolling-Galt (voice of Marion Ross) less than a year after his first wife dies. Edith would emerge as the President's virtual "regent" when Wilson suffers a stroke in 1919. Voice of Wilson: Rene Auberjonois.

Recalling the "epic battle" over evolution waged in 1925 by fundamentalist titan William Jennings Bryan and freethinking Clarence Darrow. This chronicle also explores trial oddities. It was held in Dayton, Tenn., because civic boosters wanted to put the town "on the map." Then there's John Scopes, the football coach (teaching science was a side job) who volunteered to be prosecuted. The offending book he used was Tennessee's "official" science text. Moreover, as he wrote in his memoirs, he didn't recall ever actually teaching evolution.

An evocative two-part profile of Jimmy Carter explores how his career has been shaped by what former speechwriter Hendrik Hertzberg calls his "moral ideology." Produced by Adriana Bosch ("American Experience" biographies of Reagan and Grant), the film features comments by Carter's wife, Rosalynn, and son Chip, as well as historians, former Vice President Walter Mondale and a number of key Carter aides. Part 1 ends just after the 1976 campaign, which put Carter in the White House. He was, says Hertzberg, "exactly what the American people would say they want."

"Hostage," the conclusion of a two-part Jimmy Carter biography, covers his presidency and post-presidency. Human rights were to be "a basic tenet of our foreign policy," Carter declared in 1977, but he was overwhelmed by events in Iran, and economic woes at home led to a "malaise" so severe that the 1978 Camp David accords didn't even give him a boost in the polls. Then came the hostage crisis. But back in Plains, he and Rosalynn regrouped. And now? As former Carter speechwriter Henrdrik Hertzberg puts it: "His values, his devotion to human rights, keep on resonating in a way that his failures and weaknesses don't."

Cyrus Field's struggle to lay telegraph cables across the Atlantic in the 1850s and '60s is chronicled. When Field finally succeeded, in 1866, it marked "the annihilation of space and time," says historian David Czitrom. But the 13-year effort -- recalled here in re-creations and comments from historians and engineers -- included many false starts and one spectacular failure. Still, says Czitrom, "he never let up."

The history of yellow fever, and how it was determined that the disease was transmitted by mosquitoes. Included: the work of Carlos Finlay, the Cuban physician who found the link to the insects; how Finlay's theory influenced Jesse Lazear and James Carroll, scientists who were part of Walter Reed's team after Reed was sent by the U.S. to Havana to find the cause of the disease when American troops were sent to Cuba following the Spanish-American War.

The story of the polio crusade pays tribute to a time when Americans banded together to conquer a terrible disease. The medical breakthrough saved countless lives and had a pervasive impact on American philanthropy that continues to be felt today.