One other thing, whoever said that LA had smog before they had cars, well wind patterns or not, it came from somewhere. Also, houses with fuel-powered heaters generate smog. Also, it can't be true that the air was as brown and nasty as it is today. There weren't as many people and houses back then!
-Penguin
-Penguin
Actually large cities where much
more polluted before the advent of automobiles. The Horse was the main form of transportation, and city streets piled up with manure and urine, which released methane and ammonia into the air. Much of that manure was also washed by rainstorms into storm drains, eventually ending up contaminating drinking water. Prior to autos, trash and sewer services were also very poor, or non-existent, a lot of refuse including human waste ended up rotting in the streets. Prior to the industrial revolution the sewer system of Paris was basically the Seine River.
Pollution in the USA is actually much improved from the 1970s as well. Beginning about the time that Rachel Carson's
Silent Spring was published in 1962 the US government slowly began to succumb to pressure, and enact environmental legislation, and regulation. And it has worked, our air, coastlines and rivers are cleaner today then they were 30 yrs ago, and in general continue to improve. In addition to the effectiveness of legislation like the Clean Air, and Clean Water acts, lots of action has been taken on a state and local level as well, and people are more conscious of their decisions, and how the impact the ecosystem then ever before. More land is protected today via the 1964 Wilderness Act then ever before, and people are much better educated on how to be good stewards of that, and all land.
Pollution reduction in the North America is a great environmental success story, don't be such a pessimist, look at the facts, it is getting better, be happy.
*****But again I say, all that has NOTHING to do with the so-called "CLIMATE CRISIS". It is a sad tactic some employ to say; if you are skeptical of global warming, you must HATE the earth******EDIT, CAP makes a great point too. Air pollution in many areas, (especially where I live) has as much to do with the geography and weather patterns of an area not allowing the pollutants to dissipate, then human actions.
For example where I live we get horrific air pollution in the winter. It is not because people here pollute more then elsewhere, but because we have a wintertime weather phenomenon known as temperature inversions. Basically I live in a long narrow valley, and sometimes in the winter we get an inversion, where the a layer of warm air traps a layer cold air in the bottom of the valley. Not only does this make it very cold, but it also makes it so that virtually no emissions, or particulate matter can rise and dissipate. You won't see the sun for a week at a time, unless you drive up to the ski resorts, where it will be warm and sunny, and you can look down at the blanket of smog over the valley. It sucks sometimes, but that's just the way it is here.