A study of the towering 18th-century Tsar who modernized Russia, but who often resorted to astounding cruelty to do it. Historians describe how Peter brought science, culture, and medicine to Russia, but convicted his own son of treason.

Nate meets an industrial designer to learn how she combines engineering and art to create functional yet sleek household faucets. Then Nate takes a ride on a rollercoaster to figure out how thrill ride engineers create awesome steel sculptures and unforgettable experiences.

The Hubble Telescope is nearing its end. Its replacements are ready to go, ready to peer futher back in time and space than ever imagined.

WIND ENERGY ECO-ACTIVIST/ACTOR ED BEGLEY, JR. ENGLISH SCHOOL GOING GREEN

INVESTIGATING AND TESTING A CHINESE-MADE FLAMETHROWER.

A frail man who taught nonviolence, he was a revolutionary the British feared and the leader India followed to independence.

He called himself "Chief of Spain by grace of God." He was the intensely religious dictator who dominated Spanish life for a quarter-century, as if he were a king.

Wife to Argentinean strongman Juan Peron, Evita Peron held the promise of wealth in one hand, and, in the other, the whip that she used on a nation that worshipped her.

He was a minor government functionary in the Ukraine who dedicated his talents to the Communist party. This is the record of his ruthless rise to leadership and his dismal last days.

The history of modern Cuba was molded by the aristocrat's son who became the guiding force behind the Communist revolution.

Born in New York to an Irish mother and Spanish father, de Valera spearheaded the Irish nationalist movement, spawning a violent struggle for independence from Britain. An active revolutionary from 1913, he became president of Sinn Fein in 1918 and in 1937 made his country a "sovereign" state renamed Eire.

The life story of the iron-willed Chancellor of West Germany who helped rebuild his war-torn country both physically and psychologically.

Born a peasant in a medieval society, Mao rose to become dictator of a modern Communist state. This is the record of a revolutionary life that leaves an ideological legacy to this day.

Yitzhak Rabin's life mirrored that of his nation. From Israel's fight for independence to the wars for survival, he was always there on the frontline, and stood out as a superb tactician and strategist. Yet, his greatest vision and risk came late in life when he traveled the road of reconciliation with Palestine before his assassination.

A study of the towering 18th-century Tsar who modernized Russia, but who often resorted to astounding cruelty to do it. Historians describe how Peter brought science, culture, and medicine to Russia, but convicted his own son of treason.

The unexpected rise and extended reign of Elizabeth of York unfolds in the turbulent modern history of the English monarchy.

A royal portrait of the sister of Queen Elizabeth II. Born in the shadow of the throne, Margaret lives a life that often breaks with tradition and makes headlines in the English tabloids.

He is perhaps the most famous and revered figure in Zulu history and one of the most famous South Africans ever to have lived. Shaka Zulu transformed the Zulu tribe from a small clan into the beginnings of a nation that held sway over a huge portion of Southern Africa. Regarded by many as a military maverick, his brilliant battle tactics were revolutionary and his thirst for revenge frightening. He demanded total loyalty and obedience, drilling his warriors and turning them into a slick warring machine. He devised new, unheard of battle tactics, and earned the respect of all his men by living as they did without the trappings that he was entitled to as a chief.

A frail man who taught nonviolence, he was a revolutionary the British feared and the leader India followed to independence.

He called himself "Chief of Spain by grace of God." He was the intensely religious dictator who dominated Spanish life for a quarter-century, as if he were a king.

Wife to Argentinean strongman Juan Peron, Evita Peron held the promise of wealth in one hand, and, in the other, the whip that she used on a nation that worshipped her.

He was a minor government functionary in the Ukraine who dedicated his talents to the Communist party. This is the record of his ruthless rise to leadership and his dismal last days.

The history of modern Cuba was molded by the aristocrat's son who became the guiding force behind the Communist revolution.

Born in New York to an Irish mother and Spanish father, de Valera spearheaded the Irish nationalist movement, spawning a violent struggle for independence from Britain. An active revolutionary from 1913, he became president of Sinn Fein in 1918 and in 1937 made his country a "sovereign" state renamed Eire.

The life story of the iron-willed Chancellor of West Germany who helped rebuild his war-torn country both physically and psychologically.

Born a peasant in a medieval society, Mao rose to become dictator of a modern Communist state. This is the record of a revolutionary life that leaves an ideological legacy to this day.

Yitzhak Rabin's life mirrored that of his nation. From Israel's fight for independence to the wars for survival, he was always there on the frontline, and stood out as a superb tactician and strategist. Yet, his greatest vision and risk came late in life when he traveled the road of reconciliation with Palestine before his assassination.

A study of the towering 18th-century Tsar who modernized Russia, but who often resorted to astounding cruelty to do it. Historians describe how Peter brought science, culture, and medicine to Russia, but convicted his own son of treason.

The unexpected rise and extended reign of Elizabeth of York unfolds in the turbulent modern history of the English monarchy.

A royal portrait of the sister of Queen Elizabeth II. Born in the shadow of the throne, Margaret lives a life that often breaks with tradition and makes headlines in the English tabloids.

He is perhaps the most famous and revered figure in Zulu history and one of the most famous South Africans ever to have lived. Shaka Zulu transformed the Zulu tribe from a small clan into the beginnings of a nation that held sway over a huge portion of Southern Africa. Regarded by many as a military maverick, his brilliant battle tactics were revolutionary and his thirst for revenge frightening. He demanded total loyalty and obedience, drilling his warriors and turning them into a slick warring machine. He devised new, unheard of battle tactics, and earned the respect of all his men by living as they did without the trappings that he was entitled to as a chief.

A frail man who taught nonviolence, he was a revolutionary the British feared and the leader India followed to independence.

He called himself "Chief of Spain by grace of God." He was the intensely religious dictator who dominated Spanish life for a quarter-century, as if he were a king.

Wife to Argentinean strongman Juan Peron, Evita Peron held the promise of wealth in one hand, and, in the other, the whip that she used on a nation that worshipped her.

He was a minor government functionary in the Ukraine who dedicated his talents to the Communist party. This is the record of his ruthless rise to leadership and his dismal last days.

The history of modern Cuba was molded by the aristocrat's son who became the guiding force behind the Communist revolution.

Born in New York to an Irish mother and Spanish father, de Valera spearheaded the Irish nationalist movement, spawning a violent struggle for independence from Britain. An active revolutionary from 1913, he became president of Sinn Fein in 1918 and in 1937 made his country a "sovereign" state renamed Eire.