The owners of the historic building say a planned make-over will reduce energy use in the building by thirty-eight percent.

VOA: special.2009.05.22

Still,some economists say other signs in the economy show that the recession is over already, or will be soon.

VOA: special.2009.08.21

Doctors say that over time the damage interferes with the natural exchange of oxygen and carbon dioxide in the lungs.

VOA: special.2010.06.23

Medical experts say small amounts of carbon monoxide over a long period of time can greatly harm an unborn baby.

VOA: special.2010.02.02

They say this can provide important information about how ocean conditions change over time and how corals react to climate change.

VOA: special.2010.08.10

Researchers in the United States say drinking a lot of alcohol over a short period may influence genes involved in bone formation.

VOA: special.2010.08.31

Medical historians say the death of Clara Maass also created a public protest over the use of humans in yellow fever research.

VOA: special.2010.05.18

Joe Rosenthal's photograph seemed to say: the battle may not be over, but we are winning.

VOA: special.2010.05.31

Scientists say the thinning ozone layer over the South Pole makes climate change take place more quickly than in other areas of the world.

VOA: special.2009.06.03

But experts say taking even small amounts over the suggested dose can cause liver damage.

VOA: special.2009.07.21

Experts say Aquarius will gather as much information about sea surface salinity as has been collected by ships over the past one hundred twenty-five years.

VOA: special.2011.06.22

But experts say taking even small amounts over the recommended dose can cause liver damage.

VOA: special.2009.07.08

Experts say that while rotational grazing can save money over time, it also requires planning.

VOA: special.2010.01.19

Officials say the new law will save the government sixty-one billion dollars over ten years.

VOA: special.2010.04.15