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

Now we know that genetics makes this connection even deeper and we are linked to our ancestors by DNA.

VOA: special.2009.12.01

However,much of what we know today about the Grand Canyon was recorded by John Wesley Powell.

VOA: special.2009.10.07

By this,I mean he did not know anything about where to find things in the city.

VOA: special.2010.02.07

In other words, that your emotions can be affected by someone you do not directly know.

VOA: special.2009.01.21

Millions of blues fans around the world would come to know McKinley Morganfield by another name.

VOA: special.2010.01.18

"And ultimately saved, though,by -- " "And ultimately saved, of course,by the white, I don't know,soldier."

VOA: special.2010.03.01

You really cannot know how much C if any C of the information that comes to you by the grapevine is true or false.

VOA: special.2009.02.22

From what we know about a man like Murlock, we may try to imagine some of the details of the story told by my grandfather.

VOA: special.2009.10.31

Doctors might treat those problems and not know they are caused by celiac disease.

VOA: special.2009.04.14

They also know that by the middle fifteen hundreds people left their villages and cave homes and moved south and east toward the Rio Grande River.

VOA: special.2010.07.05

But here is something that scientists now know: A team led by Professor Fu has reported the first genetic link to how much sleep we need.

VOA: special.2009.08.26

By now most parents know about the dangers of sex offenders using social networks.

VOA: special.2009.09.14

They can do this by helping individuals they know who may be experiencing loneliness.

VOA: special.2009.12.22