But Michael O'Donnell says the number of serious bird strike incidents has remained at or below two hundred each year.

VOA: special.2009.04.01

The people who started the company named it Google because in mathematics, googol,spelled g-o-o-g-o-l, is an extremely large number.

VOA: special.2009.04.19

"There are concerns in most O.E.C.D.countries that the number of nurses is too small to respond to the demand.

VOA: special.2010.06.07

At current growth rates, the W.H.O.expects the number to reach twenty million by two thousand fifteen.

VOA: special.2009.07.15

The W.H.O.says insecticide-treated bed nets have been shown to reduce the number of malaria cases by fifty percent and the infection rate by ninety percent.

VOA: special.2010.04.20