
Davis P. answered 03/15/16
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Historically, at the beginning of the 20th century, the Industrial Revolution had major negative effects on air pollution in Europe. Most World History texts have vivid images of pollution emanating from factories. This harmed both the masses who flocked to cities for jobs, and the surrounding environment.
At the beginning of the 21st Century Europeans are much more concerned with the harm of industrialization on the environment. Putting “Kyoto Protocol” in a search engine will help you find the complete answer to your second question. A short response is that in 2012, a second commitment period was agreed on. This is the Doha Amendment to the protocol. The European Union, and its 28 member states, have a binding target on this amendment.