Shackleton makes a run at the South Pole

Shackleton become a public figure even as Antarctica beckons

Shackleton takes part in the 1901 Discovery Expedition

The early life of Shackleton and the Heroic Age of Antarctic Exploration

Alvise Cadamosto explores the west coast of Africa and discovers the Cape Verde Islands

The explorations and legacy of Prince Henry of Portugal

Henry's captains continue to explore down the African coast; Henry tries to take Tangier

The early life of Prince Henry and the discoveries of the Madeira Islands and the Azores

Explorer Andrés de Urdaneta maps the route from the Far East to the New World

The world for Hillary and Tenzing after the 1953 summit of Everest

Hillary and Tenzing make their assault on the summit of Everest

The 1953 British Mount Everest Expedition begins

The life of Tenzing Norgay and the world of the Sherpas

A background on Edmund Hillary

Mallory and Irvine make one final try on the summit of Everest

The 1924 British Mount Everest Expedition

The 1922 British Mount Everest Expedition

In 1921, British mountaineer George Mallory would be the lead climber with the British Mount Everest reconnaissance expedition

The Polos head home - completing a 24-year, 15,000+ mile journey.

Marco Polo heads down the Grand Canal to the legendary City of Heaven

The Mongol World and Marco's first expedition across China

Marco Polo and his family travel the Silk Road to reach the court of the legendary Kublai Khan

Marco's father and uncle, Niccolò and Maffeo Polo, visit Kublai Khan and prepare for another journey east

Brazza returns to Africa as an administrator - and investigator

Brazza returns to Africa where he will establish an outpost on the great Congo River