Rolf,
The title of this thread -- Planet Garbage -- tripped a switch in my head and reminded me of an idea I had for some documentary work that I never pursued. I'm passing it along, in case it is something that might interest you.
The idea would be to start with a piece of garbage from your own kitchen -- a cereal box, an empty can, bread wrapper, whatever you are throwing away -- and follow it to its ultimate destination . . . into the waste bin in your kitchen, to the garbage can or bag, to the truck the collects the garbage . . . where does the truck take it? To a landfill? A recycling center? What happens to it once it reaches that destination? And on and on, until it reaches wherever it is finally disposed of, destroyed, or recycled.
Could be very interesting and photographically challenging.
Cheers, Jock