Pollution from road traffic, particularly diesel fumes, is the most significant cause of poor air quality in most cities.
In America, three-quarters of poor households have air-conditioning.
Analysts say the poor performance is partly due to bad news in the European airline sector which was hit by poor results at Swiss Air, whose shares fell 29%, and a strike threat by pilots at Lufthansa.
As it remains in the atmosphere for a matter of weeks, some researchers have suggested that cleaning up its production could be the quickest way of curbing warming, as well as bringing health benefits to poor countries by reducing air pollution.
More broadly, dirty water and air, and poor sanitation, are the biggest preventable causes of death.
People are heavily dependent on cars, the air quality is poor and access to green space is haphazard.
The Fresh Air Fund sends poor New York City children to stay for free at camps or with volunteer host families in suburbs or small towns.
In the early 1990s, Congress asked questions about its poor serviceability record but the air force complained that this was mainly due to a lack of funding for maintenance.
As many as 15 percent of the 5, 000 previously approved welds in the reactor's auxiliary plumbing, containment dome and spent-fuel cooling systems were X-rayed and found to be defective due to air pockets, poor soldiering and heat damage.
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But now there's hope for us poor suckers: small jets and air taxis.
Contrary to images of "going back to the Stone Age, " this form of energy efficiency actually increases the levels of illumination (and thus literacy), while trimming greenhouse gas emissions, indoor air pollution and energy bills that mire the poor in poverty.
In the case of the Lion Air incident, it appears both lack of experience and poor training may have played a part.
While it was awkward for Strauss and Cook in the first hour as the ball nipped around in the air and off the pitch, there were too many poor deliveries which relieve the pressure.
"The residence was of such a poor environmental condition that it was unsafe for us to breathe the air, " said Special Agent James Ash of the Bureau of Alcohol, Tobacco and Firearms, according to a sworn deposition obtained by the BBC.
The airline has blamed its poor results on rising fuel costs and falling demand because of increases in air passenger duty.
The air force says the problems in question (including communications glitches in poor weather and landing mishaps) have since been solved.
After graduating from Union College in upstate New York, he joined the Air Force, hoping to learn to fly jets, but his poor eyesight kept him out of the cockpit.
My own feeling of liberation as the plane took off from Nice airport headed for London could hardly have been bettered by that of poor Madame Lavisse as she stepped from her elevator prison and inhaled the fresh air of freedom.
Maybe the options grant was their way of paying him back for providing Liberty with such a golden opportunity to coin money out of thin air just because they were cash rich at a time when Sirius was cash poor.
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They lean toward making poor quality ads and then saturating the airwaves with them, he said, resulting in an air war that drains campaign coffers and turns voters off.
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It is a future where we must strengthen our collaboration on critical environmental issues: cleaning up our air, land and water, fighting for environmental justice to relieve the burdens of pollution in poor and minority communities, protecting the planet we all call home and safeguarding the creation that has been given to us to steward.
Any restaurant using the mid-air messaging system is unlikely to be happy with it being co-opted by patrons complaining about poor service.
The disease, which is contagious and spreads through the air when an infected person coughs, spits or sneezes, strikes everywhere, but predominantly affects the poor.
People did not believe poor Vladisa, even when they saw him running down the hill, white as a ghost, arms in the air, with no calf.
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