"The thing about clay is every culture knows clay, because they use it.

VOA: special.2009.09.09

But experts say no-one knows how large the world stockpile of nuclear material is because not every country reports what it's producing.

VOA: standard.2010.04.06

"This one has been blooming for awhile,beautiful." He knows every plant, its health,awards and history.

VOA: standard.2010.02.21

"It's very popular," "Every single person knows Michael Jackson's name.

VOA: standard.2009.06.26