Doctors used a catheter and placed two mesh tubes, called stents, into a blocked artery to help keep it open.

VOA: special.2010.02.17

The United States Library of Congress appoints an official poet, called the Poet Laureate, every one to two years.

VOA: special.2010.04.05

In nineteen eighty-two, American researchers James Wilson and George Kelling wrote a report describing what they called the broken windows theory.

VOA: special.2009.03.03

And even in the conservative grain-farming states, two hundred thousand farmers joined a group that called for major economic changes.

VOA: special.2010.12.09

Two years ago,European researchers reported that aspirin may have what they called a "long-term protective effect against colorectal cancer."

VOA: special.2010.12.14

In nineteen fifty-two, Mister Chavez met Fred Ross, an organizer with a workers' rights group called the Community Service Organization.

VOA: special.2009.09.06

Jamaica Corker says more than twenty thousand people called the hotline in two thousand eight, the latest year available.

VOA: special.2010.05.03

A treaty called the Rome Statute established the court in The Hague, in the Netherlands, in two thousand two.

VOA: special.2010.06.21

The trip to Spain resulted in two works, a play called "The Fifth Column" and the novel "For Whom the Bell Tolls."

VOA: special.2011.06.26

He and two friends created a songwriting and production group called the Smeezingtons that has been very successful.

VOA: special.2010.10.29

In two thousand eight Norway opened a so-called doomsday vault designed to be secure from any threat -- even an asteroid strike.

VOA: special.2010.08.24

An exhibit called "Brides of the Arab World" is in the two main halls of the Kennedy Center.

VOA: special.2009.03.11

In two thousand two, a puppet named Kami appeared on the South African version of "Sesame Street" which is called "Takalani Sesame."

VOA: special.2009.11.27

In two thousand three, Sendak worked with the playwright Tony Kushner on a picture book called "Brundibar."

VOA: special.2009.10.05