In the 1950s, clouds of smoke from coal burning combined with low-lying fog.

在 20 世纪 50 年代，燃煤产生的浓烟与低洼的雾气相结合。

And all of this coal burning, it has effects, significant effects, acidic effects.

所有这些煤燃烧， 它都有效果， 显着的效果， 酸性效果。

And there was a lot of soot going into the atmosphere as a consequence of coal burning.

由于煤炭燃烧，大量烟灰进入大气中。

The dirty air is being blamed on coal burning, car exhausts, factory pollution, and shifting weather patterns.

肮脏的空气被归咎于燃煤、汽车尾气、工厂污染和不断变化的天气模式。

Coal burning power plants are now replaced with hydraulic power plants and electrical cars are replacing some gasoline efficient cars.

燃煤发电厂现在被水力发电厂取代，电动汽车正在取代一些省油汽车。

For example, a wind turbine in West Virginia that cuts down on coal burning avoids 33 times as much health and environmental damage as would the same wind turbine in California.

比如在西弗吉尼亚州设立的风力涡轮机降低煤炭燃烧，其能避免的健康和环境破坏，是加州相同涡轮机的 33 倍。

And so there was a Clean Air Act in the US and in Europe, and you know, we really lowered the emissions of soot associated with coal burning.

因此，美国和欧洲出台了《清洁空气法案》，你知道，我们确实降低了与煤炭燃烧相关的烟尘排放量。

Xcel Energy has a portfolio of old coal burning plants, like this one just north of Denver, that will stop burning coal soon to meet the new targets.

Xcel Energy 拥有一系列旧燃煤电厂，例如位于丹佛北部的这家电厂，这些电厂将很快停止燃煤以满足新目标。