Rapitest - soil test kit instructions 

Food, Inc.
The best quality version I could find online has subtitles: Click Here


Fat, Sick & Nearly Dead


The Future of Food:
http://www.filmsforaction.org/watch/the_future_of_food/

...many more food related movies:
http://www.filmsforaction.org/watch_food_videos/

Land Use - Urban Sprawl vs. Smart Growth: