President Obama has signed legislation to make the biggest changes in the health care system in forty-five years.

VOA: special.2010.03.24

The goal of the Stardust-NExT spacecraft is to gather scientific evidence about one of the solar system's most changeable objects -- comets.

VOA: special.2011.02.09

They found that TGF-beta helps to heal wounds and is important in the body's defense system against disease.

VOA: special.2009.01.27

Between thirty and thirty-five women used each system to pump water from the ground or a stream.

VOA: special.2010.01.11

It uses Google's Android mobile operating system and is meant to work easily with Google's Web-based services.

VOA: special.2010.01.26

She developed a mobile phone-based system that permits people to share important information throughout the Habla network.

VOA: special.2011.03.02

In nineteen forty-eight, he moved his show from the National Broadcasting Company to the Columbia Broadcasting System.

VOA: special.2009.10.11

Engineers on the ground designed a way the astronauts could connect air-cleaning devices from the command module to the air system in the lunar module.

VOA: special.2009.07.22

"The brain-machine interface is a system that allows disabled people, people suffering from physical disabilities to communicate with external world and also to control devices."

VOA: special.2011.04.04

They also may use immunotherapy -- getting the body's immune system to fight the cancer.

VOA: special.2010.07.06

The readings are then sent to a health-care monitoring system.

VOA: special.2010.12.06

And some last-minute repairs were made to his radio system.

VOA: special.2009.06.17

Now his aim is to develop a lower-cost lighting system.

VOA: special.2009.12.21

There was no state-to-state highway system.

VOA: special.2010.01.11

The system uses small radar-guided missiles to blow up incoming rockets with ranges of between five and 70 kilometers.

VOA: standard.2010.07.20

He says that from the 1970s on, the Soviet economy proved unable to adjust to an increasingly information-driven global production system.

VOA: standard.2009.11.03

He also says plans by the G-20 to revive the global financial system are "moving in the right direction".

VOA: standard.2009.04.06