In the past,the W.H.O.and experts with America's Centers for Disease Control and Prevention noted guidance for disease spread on airplanes.

VOA: special.2009.07.14

We have a lot of freedom to build and design airplanes for our own use and build them and fly them."

VOA: special.2010.07.30

They were as important as automobiles and airplanes are to the American economy today.

VOA: special.2010.02.25

They are also setting backfires to clear away dry brush, and using helicopters and airplanes to drop water and fire retardant.

VOA: standard.2009.09.01

It's uses batteries. "We wanted to stimulate thought about electric airplanes, and this is really the culmination of that."

VOA: standard.2010.08.11

A wave of cold and snowy weather continues to grip Europe, grounding airplanes,trains and cars and causing dozens of deaths.

VOA: standard.2010.01.10

And it's from low-flying airplanes each spring that pilots sow the rice crop by tossing seeds from 900-kilo bags into the wind.

VOA: standard.2010.06.17

"Helicopters and airplanes came and started first with a show of force.

VOA: standard.2009.09.12

Meanwhile,IntelCenter,a U.S.-based terrorism monitoring group that works with the U.S.government, warns the Christmas day attack could be just the start, and that the possibility of additional attempts on U.S.airplanes can not be ruled out.

VOA: standard.2009.12.26

"You cannot build a foolproof system for air security unless you are willing to slow the whole air system down to a crawl and institute very, very invasive procedures before Americans get on airplanes,".

VOA: standard.2009.12.30