I came up with this picture to show what humans are doing to our planet. The Skull represents humans and everything that surrounds the planet was "man made".

The hands represent that the planet is in our hands.

I drew this while sitting in front of my fish tank. I had realized that I had forgot to feed them. Then I had one thought lead into another and next thing I know I'm thinking of how the fate of the fish tank rests in my hands.