Distribution of air is a concern because direct exposure to the cool air may cause discomfort.
By contrast, outdoor air became a concern in the United States as a result of a combination of specific incidents and a wave of grassroots action.
By the end of the 20th century, increases in air travel made air traffic congestion a concern.
But if air quality is a concern for you, whether because of allergies or sensitive skin or a general focus on health, the Awair is a pretty small price to pay ($199) for peace of mind.
Air pollution is a concern in Italy, and several studies of mortality and hospital admissions in adults (Katsouyanni et al. 1996) and children (Bedeschi et al. 2007; Romeo et al. 2006; Vigotti et al. 2007) have addressed this issue.
Outdoor air quality becomes a concern after flooding events when sediment deposited by floodwaters on city streets and sidewalks dries and is kicked up by vehicles and foot traffic.
For instance, despite the importance of using air-conditioners in reducing heat impacts, only two studies reported on the cost of running air-conditioning as a concern to a considerable number of the participants [ 27, 29], and even then it was not clear if the concern was actually associated with using the air-conditioners during heatwaves.
However, Ofcom had a chance to air any concerns about James Murdoch and investigate his role when news broke in January that he would be returning as Sky chairman.
"It's an air quality concern, it's a congestion concern: Why should we have all of these tour buses in the neighborhood?" asked Julie Menin, the chairwoman of Community Board 1, which covers Lower Manhattan.
Confounding by other SES-related factors potentially correlated with air pollution is also a concern.
"We upped our buy in the Tampa media, to re-air a spot concerning Gore's record on the environment," explained Terry Holt, a spokesman for Victory 2000, the campaign arm of the Republican National Committee.
