No one even knows how many forensics laboratories, public or private,there are.

VOA: special.2009.10.03

But,Onalfo knows how things can change - for better or worse.

VOA: special.2010.06.02

And,he knows how to keep his shirt on.

VOA: special.2010.05.02

Nobody knows how far.

VOA: special.2009.02.22

We look to the other side of the ocean to learn how a people which has known how to make itself free, knows how to preserve its freedom. " The assassination of Abraham Lincoln touched the imagination of America's writers.

VOA: special.2009.12.31

No one knows exactly how many mompreneurs there are.

VOA: special.2010.04.23

Janitors in Yonkers are preparing for students to return in September, But no one knows yet how many teachers will be here to greet them.

VOA: standard.2010.08.11

While analysts say no one knows for sure how many jobs the stimulus has created, President Obama says he's under no illusions that one program alone can solve the nation's economic problems.

VOA: standard.2010.06.18