How have approaches to evironmental issues changed over the years?

Over the years, greater controversy has arisen over environmental issues as the issues addressed have become more complex and less easily identifiable

Tbh this is pretty much to be done on your own, with the multitude of issues that go around, within literally ten seconds you can logically think of one, so this one is pretty much a free write for yourself, because no matter how many people try to answer this question, all of them could be different cause its a lose ended question, the answers are limitless