Attorney General Holder said U.S.officials are closely cooperating with Mexico in the battle against La Familia and other drug cartels, a battle he compared with the one waged by law enforcement agencies against organized crime.

VOA: standard.2009.10.22

For his mathematical project, he compared two ways to estimate the square root of an integer, a number with no fractional parts.

VOA: special.2011.03.24

The two groups were retested four years later, and the study compared the results with the first test.

VOA: special.2009.10.21

The researchers compared these retinal images with pictures taken five years later when the women were eighty-three.

VOA: special.2010.03.09

The study compared trees that had been thinned by machine with those that had not been thinned.

VOA: special.2009.11.10

The researchers compared the judges' opinions with the way the people who were photographed rated themselves.

VOA: special.2009.11.24

F.C.C.Chairman Julius Genachowski says the service available is slow and costly compared with other developed countries.

VOA: special.2010.03.19

The researchers say that was compared with only fifty-one of those who received the vaccine.

VOA: special.2009.10.13

Sadness increased the risk nearly six percent compared to periods with no such feelings.

VOA: special.2009.03.24

in the children." The scientists reported that the risk of the disorder was almost double in children with high levels compared to those with no measurable level.

VOA: special.2010.05.26

The scientists compared bees from affected colonies with those from healthy colonies.

VOA: special.2009.09.22

They compared the effects of black surfaces on rooftops with white roofs.

VOA: special.2010.03.02

The team compared bees from affected colonies with those from healthy colonies.

VOA: special.2009.09.15

Researchers compared the pathways that transmit dopamine in fifty-three adults with A.D.H.D.

VOA: special.2009.09.16

In 2009,647 million people flew in the Asia-Pacific, compared with North America's Brian Sinclair Thompson, Thailand manager for Swiss International,is upbeat over the region's outlook.

VOA: standard.2010.02.04

The Pacific Asia Travel Association says the recovery had gathered momentum, with international visitor arrivals in the region increasing three percent in November compared with a year earlier.

VOA: standard.2010.02.04

A recent poll by ABC News and The Washington Post newspaper found that 51 percent of those surveyed believe the war is not worth fighting, compared with 47 percent who support it.

VOA: standard.2009.09.02

In this study, the research team developed a new statistical way of analyzing the genetic code of people who had reached age 100 as compared with people who had a more typical lifespan.

VOA: standard.2010.07.14