The story of Harriet Tubman and the underground railroad. The evolution of the blues is traced from sleepy towns of the Mississippi Delta to the bustling streets of Chicago. A look at Ethiopia under Haile Selassie's rule. March 13 Venice Burning Venetians face the challenge of fighting fires from boats in a city whose history is dotted with fiery disasters.
Environmentalists raise awareness of the problems facing America's rivers.
March 27 Hunt for the Great White Shark New insights into the behavior of this misunderstood animal are examined. A retrospective of the life of Louis Leakey. A remarkable elephant migration is captured on film. A sailing couple travels Europe's canals in a yacht. Adventures by dogsled along the Yukon.