Use the arrows or WASD to guide Dot through the stages. Don't touch the pollution clouds and collect all the litter. (At the end you should wait so that you get the REAL end.)
I did this whole thing myself, so no credits apart from for me for having such and amazing brain. I mainly did this because of an interesting conversation I had about climate change and global warming with @-AFriendlyScratcher- and now I finally got myself around to do this! Feel free to remix or comment!