The scientists say they do not know how the treatment would work with patients who have no sensation at all below the injury.

VOA: special.2011.06.01

Transportation and law enforcement officials, safety activists and others will discuss how to deal with drivers who do other things as they drive.

VOA: special.2009.08.07

They do not know why da Vinci painted it, or how it ended up in the collection of French ruler Francis the First.

VOA: special.2010.06.23

We are worried because we do not know how long they will stay or how we will take care of them.

VOA: standard.2009.10.27

"How he is kicking and all that stuff and I do everything what they say I must do.

VOA: standard.2010.07.01

There's another path by which they can learn about accelerators and particle detectors essentially, how do we know any of this.

VOA: standard.2010.03.05

So within these two things Africa will surely have a lot of hope and confidence that they can do it like how we did it here,".

VOA: standard.2009.10.17

"And I remember waving flags and my grandfather telling me that the Apollo mission was an example of how Americans can do anything they put their minds to,"

VOA: standard.2009.07.20

They know how to win over there,". The differences in opinion among veterans over what to do in Afghanistan reflect a broader uncertainty among the American public, says pollster Peter Brown.

VOA: standard.2009.11.16

Dr.Vallenas says many mothers are discouraged from breast-feeding because they do not know how to get their baby to latch on properly to the breast's nipple, or because they suffer pain and discomfort.

VOA: standard.2009.08.01

"It depends on what the Egyptians will do out of it and how they focus the investment foreign policy-wise in key spaces which are relevant to national security issues where Egypt has a greater chance of success."

VOA: standard.2009.11.03

"On the Internet, the other side is trying to exploit people's feelings, and they give them instructions on how to do wrong things and we have to give (them) tools and manuals also on how to stay cool and level-headed and stay reasoned and don't get yourself and others in trouble,".

VOA: standard.2009.12.20

How do we know that they are not going to keep it all?" The United States and allies France and Russia have supported the IAEA draft deal with Iran as a means to alleviate concerns that Tehran is using its nuclear program to develop atomic weapons covertly.

VOA: standard.2009.10.28

"How do we get creative and think not just of what they have done, but what they are going to do next and next and next?" But the homeland security secretary says the U.S.government must also take care not to intrude on citizen privacy as it ramps up its defense of the worldwide electronic network government agencies, businesses and individuals increasingly depend on.

VOA: standard.2009.08.11