Global warming is a "duh", but not for the reasons most people think.
For example, there is a wildlife preserve across the way here, if you walk/ride by the intersection on a hot night, the temp cools down about 15 degrees
And, the really really hot night we had (didn't get below 90) the concrete was so hot, you couldn't walk on it without discomfort at 1am!
The point is that all this concrete/steel added to the overwhelming consumption we as people place on planet make for some negative changes.
And that doesn't even account for the changes that take place naturally, which was happening well before humans started to influence climate......