“Exposure to PM _2.5 microns in diameter (PM2.5) over a few hours to weeks can trigger cardiovascular disease–related mortality and nonfatal events; longer-term exposure (eg, a few years) increases the risk for cardiovascular mortality to an even greater extent than exposures over a few days and r educes life expectancy within more highly exposed segments [...]
Posts on ‘October 3rd, 2011’
Episodic Exposure to Fine Particulate Air Pollution Decreases Circulating Levels of Endothelial Progenitor Cells
Acute and chronic exposure to elevated levels of fine airborne particulate matter (PM) is associated with an increase in the incidence of adverse cardiovascular events,1,2 atherogenesis, cardiovascular disease (CVD) risk, and cardiovascular mortality. In urban environments, fine PM (PM with aerodynamic diameter of 2.5 m [PM2.5]) is generated mostly by fossil fuel combustion in automobiles [...]
Beware the Air! : Why Particulate Matter Matters
The “Six Cities Study,” as it is affectionately known by epidemiologists, was published in 1993. This landmark study laid the groundwork for an association between ambient air particulate matter (ie, fine particulate matter [PM] or PM2.5 [particulate matter of 2.5 m aerodynamic diameter or less]) and the risk of all cause mortality in the United [...]
Lockheed Stratoliner: Is it a bird? Is it a plane? It’s both… and pollution free too
http://www.terminalu.com/travel-news/lockheed-stratoliner-is-it-a-bird-is-it-a-plane-it%e2%80%99s-both-and-pollution-free-too/16888/ Photo: William Brown/courtesy of Tuvie A British designer has shared a concept for a hydrogen-powered commercial jet that can fly any distance non-stop, after taking inspiration from a bird that makes the longest non-stop migratory flight in the world. The concept plane’s wings are inspired by the Bar-tailed Godwit – birds known to fly [...]