Sorry! Very sorry!!! Post the wrong (last year) winning result. Here's this year (2008) green earth competition winners...
1st prize

design by : ji yoon Yang from korea
2nd prize

design by : Benjamyn Cox + Lloyd Moffat from uk
3rd prizes (x3)

design by : glen baghurst + matthew cullin from australia

design by : camila gimeno from chile

design by : felicia lee from taiwan
(picture and text taken from designboom.com)
Click on link to visit designboom.com read all the winning designs national and view other shortlisted entries.
Related post:
Green Earth International Graphic Design Competition