President Obama, at his first major press conference, called on a reporter for a Web-only operation, the Huffington Post.

VOA: special.2009.03.21

He also called on the graduates to work on finding a voice for themselves that is clear and truthful.

VOA: special.2010.05.28

When they returned to the university, the four students called on others to join them the next day at Woolworth's.

VOA: special.2010.01.29

During its yearly World Water Day observance last month it called on the international community to work together to solve the water crisis.

VOA: special.2010.04.05

And NASA is also being called on to develop new technologies to solve problems involved in long-term space flight for humans and robots.

VOA: special.2010.04.28

On Wednesday, the United Nations Security Council called on the politicians to settle their differences.

VOA: special.2010.08.07

In the speech, Mister King called on Americans to remember the promises of democracy.

VOA: special.2009.09.18

She called on GW students to continue to open their minds and serve others.

VOA: special.2010.05.28

Then Buchanan called on the South to accept the election of Abraham Lincoln.

VOA: special.2009.07.16

And World Bank President Robert Zoellick has called on rich nations to put some of their economic recovery spending into a crisis fund to help poor countries.

VOA: special.2009.03.13

Instead,he called on the space agency to reach deeper into the solar system.

VOA: special.2010.04.28

When he and his son, Bobby Bare,Junior, decided to make this album, they called on everyone they knew in the business who was a fan of Shel Silverstein.

VOA: special.2010.06.04

But he also called on the Sri Lankan government to act responsibly.

VOA: special.2009.05.16

Then it called on the United States for protection.

VOA: special.2010.07.08