HARD PROBLEMS follows the six exceptional high school students who represented the United States in 2006 at the world's toughest math competition — the International Mathematical Olympiad (IMO). 

Washington Week, PBS' longest-running public affairs series, features Washington's top journalists analyzing the week's top news stories and their effect on the lives of all Americans. 

Walter Littlemoon is a 69 year old Lakota man. At the age of five, he was removed from his family to attend a federal government boarding school where his culture, language and spirituality were suppressed. "The Thick Dark Fog" profiles Walter's journey to heal himself and his community and to reclaim his heritage. 

This provocative episode of NOVA scienceNOW examines whether we can slow down the aging process, looks at the latest on human hibernation, and checks in with bioengineers and a computer scientist inventing ways to keep us "going forever." 

The story of Yemeni migrant workers who came to the United States in the post-1965 era, when the new immigration law opened the gates to non-Europeans. While most settled in the Detroit area, a small band of villagers from the mountainous Ibb region found work in the San Joaquin Valley in California, where they tended the vineyards that produce a yearly bounty of internationally renowned table grapes. 

In WALKING THE GREAT DIVIDE, filmmaker Mark Flagler sets out to traverse the entire Continental Divide Trail, the 3,100-mile backcountry trail that stretches from Mexico to Canada.

The public television documentary examines Bhutan’s "Gross National Happiness,” a government policy emphasizing environmental and cultural preservation, economic development through hydroelectric power, and transparent and honest governance.

The series gives armchair diplomats in-depth analysis and expert opinion on the eight most critical global issues facing America in the year ahead.
 

In 1982, a San Francisco athletic group tries to hold a "Gay Olympics," instigating what will ultimately become a battle at the U.S. Supreme Court and a challenge over the place of gays and lesbians in American society.

Starting in Calcutta during the chaos and fireworks of the Hindu New Year, Sanjeev takes a trip on the Ganges, and sees a spectacular statue-dunking ceremony dedicated to the city's patron goddess, Kali.