They were fun to read. Yet his books sometimes dealt with serious subjects including equality, responsibility and protecting the environment.

VOA: special.2010.05.02

Yet his greatest influence may have come from popularizing a song that he himself did not write.

VOA: special.2009.07.27

Yet his influence lives on. While teaching at the University of Pennsylvania, he trained many future builders.

VOA: special.2009.12.13

Yet his advice continues to affect the lives of millions of children and their parents.

VOA: special.2009.03.15

Yet his words could not save the silver purchase law.

VOA: special.2010.06.24

Yet for all his influence, millions of Americans today remember him for just one song, which children learn in school.

VOA: special.2009.07.27

His train is unsafe. Yet he stays on the job after other workers have called a strike against the railroad company.

VOA: special.2010.09.06

Yet it was the work of naturalist Alfred Russel Wallace that pushed Darwin to finally release his theory.

VOA: special.2009.12.01

Yet once he had enough paths built to welcome visitors, no one seemed interested in his "bat cave."

VOA: special.2009.12.07

Yet he had problems all his life following the orders of those who were his commanders.

VOA: special.2009.05.24

Yet,music experts say all blues guitar players are measured against one man and his famous guitar.

VOA: special.2010.05.12

Yet over the years, Mister Jackson expressed dissatisfaction with limits that were put on his talents.

VOA: special.2009.03.01

Yet he was worried. He believed the Confederate force around Richmond was much larger than his.

VOA: special.2009.09.17

Yet,his recordings and films have been,and are still, enjoyed by people all over the world.

VOA: special.2010.04.04