The final episode follows the risk-takers whose innovations became global icons in the second half of the 20th century.

The final episode follows the risk-takers whose innovations became global icons in the second half of the 20th century. Every passenger whisking across continents today can thank Juan Trippe, the founder of Pan Am, who brought the world into the jet age in the late 1950s by pushing Boeing and Pratt & Whitney to design a plane that would carry 200 people across the Atlantic Ocean in less than seven hours. The 707 made the world smaller, but it was an 11-inch plastic doll, Barbie, that would become one of America's most powerful symbols abroad. Created by Ruth Handler in 1959, Barbie is now sold in 150 countries at a rate of two dolls per second.