During one week in nineteen forty-eight, poisonous air in a nearby town killed twenty people and sickened six thousand others.
VOA: special.2009.07.13
Chemical sprays like air fresheners,hair spray, household cleaning products and even strong perfumes can also trigger an asthma attack.
VOA: special.2009.07.28
Every year,moist air masses known as monsoon produce large amounts of rainfall in India,East Asia, northern Australia and East Africa.
VOA: special.2010.05.25
It is a line drawing made out of aluminum wire that looks like a wavy net floating in mid-air.
VOA: special.2009.05.06
The American Lung Association said Pittsburgh was last in the nation in one of three measures of air quality.
VOA: special.2009.07.13
When his head came out of the water for air, he saw that he was farther away from the soldiers.
VOA: special.2011.05.28
Critics accused European air transport officials of being slow to react, then overreacting to the possible risk to airplanes.
VOA: special.2010.04.23
"That will not have any appreciable or noticeable impact on the air traffic control infrastructure in the foreseeable future today.
VOA: special.2011.07.11
But Arctic air has damaged some Florida oranges and strawberries in recent days, and killed fish at tropical fish farms.
VOA: special.2010.01.12
The Centers for Disease Control says HEPA filters are effective in clearing the air of many particles that cause disease.
VOA: special.2009.07.14
A spokeswoman for the mayor's office, Joanna Dovan,says the Pittsburgh area has been working to improve its air quality.
VOA: special.2009.07.13
Mars has less gravity. My attempts to walk resulted in jumps and hops, which took me into the air.
VOA: special.2010.07.10
But Chesley Sullenberger is also an expert on air safety, including accident investigations, and even has his own consulting business.
VOA: special.2009.01.30
People did not object to making young children work long hours, in places that had bad air and bad light.
VOA: special.2010.08.01
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