They found the highest levels of solar activity cause small, but far-reaching effects on weather systems around the world.

VOA: special.2009.09.29

Mohammed Bah Abba personally financed the first five thousand pot-in-pot systems for his own community and five villages nearby.

VOA: special.2009.02.09

The Race to the Top competition will look for states and local school systems with effective reforms in four areas.

VOA: special.2009.07.30

They were put to work as cleaners at fish farms along the Mississippi River and in wastewater treatment systems.

VOA: special.2009.12.15

A third area is building data systems that not only measure student success, but also inform teachers how to improve.

VOA: special.2009.07.30

He says projects designed to increase interpersonal trust can have a major effect in poor countries with undependable legal systems.

VOA: special.2009.12.19

They expressed concerns that information about risks to financial systems in central and eastern Europe is "often simplified and misleading."

VOA: special.2009.03.06

The rain harvesting systems mean that a family member no longer has to walk long distances to get water.

VOA: special.2009.07.27

African countries frequently have to wait for years, if not decades,for new medical products to trickle into their health systems.

VOA: special.2011.01.19

Professor Wobbrock says the group's main goal is to make information and computer systems more available and easier to use.

VOA: special.2011.04.18

Barry Spletzer formerly worked as a top scientist at the Sandia National Laboratories Intelligent Systems and Robotics Center in New Mexico.

VOA: special.2011.06.21

One is a belief that a government is stable and that the justice and legal systems are fair and effective.

VOA: special.2009.12.19

As part of the plan, the Army Corps of Engineers built roads, canals and water-control systems throughout South Florida.

VOA: special.2010.09.21

Many victims live in areas with poor or non-existent health care systems and where antivenom treatments are often not available.

VOA: special.2010.01.25