An object in the solar system could be identified if it appeared to move from its place in the earlier photograph.

VOA: special.2010.07.11

Microfinance provides poor people with a way to build savings and work toward becoming part of a country's official financial system.

VOA: special.2010.06.16

He says they might be trying to increase their dopamine levels to make up for the deficits in their reward system.

VOA: special.2009.09.16

But the poorly designed protection system was widely known to be too weak to protect against a major hurricane.

VOA: special.2010.01.22

Later a transport system was added to permit people to visit an observation area inside the top of the arch.

VOA: special.2009.03.04

He says a new system is needed to meet the speed and complexity of a twenty-first century global economy.

VOA: special.2009.06.19

But he says the education system is "falling short" and "countries that out-educate us today will out-compete us tomorrow."

VOA: special.2009.07.30

Coming up with a plan to fix the banks and the financial system is now the job for Tim Geithner.

VOA: special.2009.01.30

A major reform of the American system of health care and insurance has moved farther in Congress than ever before.

VOA: special.2009.11.13

Yet,every day,Americans depend on their transportation system to keep them, and the largest economy in the world, on the move.

VOA: special.2010.01.11

A "tornado outbreak" is often defined as six or more tornadoes produced by the same weather system within a day.

VOA: special.2010.05.11

Those challenges included an economic downturn, wars in Afghanistan and Iraq and a promise to reform the health care system.

VOA: special.2010.01.23

RIM says its system is set up in a way that no one, including RIM, can access user information.

VOA: special.2010.08.06

Trust also plays into much bigger issues, like reaching a climate change agreement or reforming a health care system.

VOA: special.2009.12.19