For the first time, scientists around the world had a limitless number of cells they could use to test the effects of diseases, medicines and chemicals.

VOA: special.2010.07.21

This was the time for the crew to test all the spacecraft systems.

VOA: special.2009.07.15

"They are around and they stand the test of time because they can still raise questions about what we are going through today."

VOA: standard.2010.04.08

And testers threw large, inflatable dolls - representing children - in front of the cars at random mements to test the driver's reaction time.

VOA: standard.2010.06.24

"But I hope people will equally understand that it will be better to get the decision right rather than rushing into something that will not stand the test of time."

VOA: standard.2010.05.10

On the other side of town, scientists are working on a genetic test they hope will cut the time it takes to diagnose MDR-TB from 70 days to two days.

VOA: standard.2010.07.12

And I think that will stand the test of time." State Department officials traveling with Secretary Clinton say she also discussed the Group of Eight leading industrialized nation's That money is in addition to emergency humanitarian programs, and is meant to fight hunger by enabling small farmers to produce more of their own food by improving productivity.

VOA: standard.2009.08.16