These pictures show young readers what led Darwin to form his great discovery: the evolution of species through natural selection.

VOA: special.2009.02.27

He wanted to express his feelings for the form of the skyscraper while deepening his understanding of architecture, engineering and construction.

VOA: special.2010.07.30

Newton used his great skill in mathematics to form a better understanding of the world and the universe.

VOA: special.2011.06.01

His studies on the causes and treatment of mental disorders helped form many ideas in psychiatry.

VOA: special.2010.04.13

He heard them form a circle around him and his small fire.

VOA: special.2010.02.27

In fact,his grandfather, a former prime minister, helped form the party.

VOA: special.2009.09.05

The new form of his poetry surprised many people.

VOA: special.2009.04.12

He left his post after more than 10 weeks of fruitless attempts to form a coalition government.

VOA: standard.2009.09.24

His initial response to Sunday's dramatic events was delivered in the form of a written statement.

VOA: standard.2009.04.13

Prime Minister Topolanek said he believes the president might ask him again to form a government, as his party won most votes in the 2006 elections.

VOA: standard.2009.03.25

he and his six-man band are in peak form on their new album,"Bingo!"

VOA: standard.2010.06.27

But al-Shabab, which follows an ultra-conservative form of Islam, opposes the moderate version of Islamic law the president and his U.N.-supported government are likely to put in place.

VOA: standard.2009.04.17

Today,Feiler is cancer-free. But he says his idea has caught on, and he believes that his book, The Council of Dads, and the website councilofdads.com is inspiring similar groups to form wherever dads seek strength in the fellowship of fathers.

VOA: standard.2010.06.19

Mr.Ahmadinejad's assault against opposition leaders comes at a time when he is being criticized by his own supporters for using poor judgment in trying to form a new government, and while Supreme Leader Ayatollah Ali Khamenei has softened criticism of the opposition.

VOA: standard.2009.08.28