So as Atlantis landed for the final time, Astronaut Chris Ferguson simply said "Mission complete, Houston."

VOA: special.2011.07.27

For the first time, researchers are creating a complete count of the world's sea life.

VOA: special.2009.01.13

It has taken a long time to complete the collection.

VOA: special.2010.01.27

Besides the actual performance, they look at how long it takes the soldiers to complete their tasks, since time can make the difference between survival or death for those who are lucky enough to be alive after the nuclear blast.

VOA: standard.2010.07.21