Mr.Mack also says developments in artificial intelligence could lead to a future where disabled patients could be cared for by a voice-activated robot.

VOA: special.2011.01.18

"And the brain is activated by this challenging environment and signals to the fat to stop the release of this hormone.

VOA: standard.2010.07.14

This much scientists knew. However,they were not clear on how that receptor was activated when this kind of painful event occurred.

VOA: standard.2010.05.04

Paramilitary troops have been activated to bolster the city's police force and new roadblocks are in place to shut down major roads.

VOA: standard.2009.03.14

When a Marine gets hit by a laser beam, his weapon gets de-activated.

VOA: standard.2010.04.06

When you touch boiling water, for example,get a cut, or even exercise too much, a special receptor on the neuron is activated, sending a signal to the brain - that hurts!.

VOA: standard.2010.05.04

It took several years of further experiments and analysis, but During and his colleagues ultimately concluded that the mild stress of all that activity and interaction activated a communication channel that prompts fat cells to stop releasing a hormone called leptin, which accelerates cancer growth.

VOA: standard.2010.07.14