Very interesting video (though maybe dry for students) about permaculture (long-term perennial) garden in Vietnam. This 300-year old garden provides all manner of food for its owners and livestock and likely all manner of wild animals too. Its a highly productive, low-impact version of agriculture and landscape design.
Poster Contest - National Association of Conservation Districts
includes general poster contest information and ppt to download on how to make a good poster using current year's theme (2010)