Australian street artist Miguel Marquez chose an unusual way to draw public attention to enviromental pollution. He simply writes ironic and touching phrases on self adhesive letters and attaches them on discarded or lost items on the streets of Sydney. It is a humorous and striking way to raise awareness of environmental issues and has artictic value at the same time. In this gallery, you’ll see an abandoned shopping cart asking where everyone is. Scroll down to see the rest of the project.