The Invisible Killer: The Rising Global Threat of Air Pollution- and How We Can Fight Back by Gary Fuller
Air pollution is a silent killer. It is often not listed as a primary cause of death. However, instances of severe pollution are almost always accompanied by increased death rates. Air pollution can also lead to various chronic health conditions and decreased quality of life. The medical costs alone of dealing with air pollution are high, but are often borne by different parties than those that are polluting.
Initial attempts at dealing with air pollution focussed on the large, visible particulate matter. It is easy to view the pollution emitted by the smokestack. The heavy particulate matter tends to have more local impacts. While it may travel, most of the impacts are nearby. However, this missed out on many of the smaller pollutants. The smaller pollutants can be more challenging to identify. They are not as easily visible. Their lighter weight also makes it easier for longer travel. Some pollutants react in sunlight to become worse. Topography and weather can impact the local conditions. Pollution can travel great distances. It can also get stuck in areas.
Air pollution comes from many sources. Big industrial smokestacks are the obvious. These are also the easiest to control. Agriculture produces significant pollution, especially during application of ammonia fertilizer. Home heating and cooking can be most impactful for local residents. Fireplaces have become more popular recently and are extremely dirty. This gets even worse when people burn treated or painted wood that emits arsenic, lead and other chemicals. Transportation is also a source with significant variation. Diesel emits more particulate matter. It has also been subject to more "cheating" in emissions testing. European countries had subsidized diesel, making it popular there. Lead in gas caused neurological problems and was eventually outlawed. Even clean burning cars emit significantly, primarily from their brakes and tires. The amount of particulate emissions increases based on weight and speed. Thus, an electric car weighed down by heavy batteries could be worse than the small gas car.
The best solution to pollution is to prevent it from happening. Reducing distance traveled and not driving cars will cause the most improvements. Building new roads usually makes things worse. Improving vehicle efficiency does improve things, but could be negated by more driving. Using clean home-heating sources helps. Natural gas is good. Electric can be good if it is produced in a clean way. Even wood burning can be made better by using higher efficiency stoves. There are some mechanisms to "clean" the air. This includes large filters, special paints and other things. These generally work, but suffer from the scale problem. The atmosphere is huge. Even the largest cleaning mechanisms can only clean a small percentage of the local air. With the constant exchange of air from other places, there is little chance for it to fully catch up.
At times, this book can get a little snarky, but generally it has an objective view on air pollution. It is open to identify what has worked and what has not. It mentions global warming in passing, but that is not the focus.