In fact,much of what historians know about the president's time at the house is from stories told by those soldiers.

VOA: special.2010.05.10

So I think this is a chance for them to know more about China, what China is really like.

VOA: special.2010.02.04

What I do is I always know who I am writing for, I always know the ensemble or the soloist.

VOA: special.2010.07.12

Bio-markers help researchers know what is happening in the bodies of people with a disease or medical condition.

VOA: special.2011.08.02

In other words, he would know what the children are doing even when he is not watching them.

VOA: special.2009.09.06

He is a leader in the sign-making industry - a real big gun,if you know what I mean.

VOA: special.2010.11.28

Another is that we do not necessarily know what drives us to do the things we do.

VOA: special.2010.04.13

How could I answer the child? I do not know what it is any more than he.

VOA: special.2009.04.12

"What we know from research on teen brain development, is that teens don't really have fully developed brains until they're twenty-five years old.

VOA: special.2010.07.01

What many people do not know is that it was meant sarcastically, as just the opposite.

VOA: special.2011.06.27

Knowledge leads to happiness, because to have it is to know what is true and real.

VOA: special.2009.11.15

And they should make sure they know what is in the medicines they take and how much of each drug is safe to take.

VOA: special.2009.07.08

And they should make sure they know what is in the medicines they take and how much of each one is safe to take.

VOA: special.2009.07.21

One writer says part of the joy in studying her is what we cannot know.

VOA: special.2010.07.18