Another reason for the increase in bird strikes is the growing popularity of air travel in the United States.

VOA: special.2009.04.01

The doctor says you should point the device so the flow of air is just in front of your face.

VOA: special.2009.07.14

The shape of a snow crystal may change from one form to another as the crystal passes through levels of air with different temperatures.

VOA: special.2010.01.05

It provides a continuous flow of air into the throat and lungs while the person sleeps.

VOA: special.2011.05.04

It measures the amount of air Arick is able to push out of his lungs.

VOA: special.2009.07.28

It seemed to sail on waves of air, just like a sailboat on ocean waves.

VOA: special.2010.10.06

Mister Zundt says diesel vehicles are the main cause of air pollution in Sao Paulo.

VOA: special.2009.09.07

A tornado is a violently turning tube of air suspended from a thick cloud.

VOA: special.2009.06.09

Race cars burn a lot of fuel, and create a lot of air pollution.

VOA: special.2009.11.03

Experts explain that the movement of air in the atmosphere and natural qualities of the human eye caused him to see markings that were not there.

VOA: special.2010.07.11

He bent over the insect and blew a breath of air at it.

VOA: special.2009.05.30

Fresh snow is made largely of air trapped among the snow crystals.

VOA: special.2010.01.05

They would gather small amounts of air from the upper atmosphere.

VOA: special.2010.05.26

When waves of air beat against her, she felt them.

VOA: special.2009.11.15