Researchers also carried out an experiment to test if signs of disorder that were heard had the same effect as signs that were seen.

VOA: special.2009.03.03

His education law,still in effect, required states to show yearly progress in student learning as measured by the states' own tests.

VOA: special.2010.07.22

People removed by as much as 3 degrees of separation still had an effect on a person's happiness.

VOA: special.2009.01.21

it takes effect in January. The new law may not go as far as some would like, but the action is historic.

VOA: special.2009.05.27

The Doppler effect explains changes in the length of light waves or sound waves as they move toward you or away from you.

VOA: special.2009.04.29

She said this had a good effect, because she was permitted to explore as she grew older.

VOA: special.2009.05.13

Another finding is that people who are married or work together do not have as much of an effect on happiness as friends do.

VOA: special.2009.01.21

She says the increase in income has a huge effect on the whole community as well.

VOA: special.2010.06.16

But,as economist Andrew Zimbalist points out, they are the effect of a free market.

VOA: special.2010.07.26

"Chiaroscuro" is a method using light and shade as a painterly effect.

VOA: special.2010.09.15

It also is known as the "Doppler effect."

VOA: special.2009.04.29

Petrov also says Russia's decision to recognize the two breakaway Georgian republics as independent states could have a boomerang effect.

VOA: standard.2009.08.26

Obviously there's a trickle effect out into the economy so there's a loss of jobs as a result."

VOA: standard.2010.03.18

She explains that the strategy did not work as predicted because of what's called a population level effect.

VOA: standard.2010.03.22