Contribution from Chris Q.:
UK site http://www.engc.org.uk/about-us/sustainability giving "six principles for engineers".
Article from the Ecologist : http://www.theecologist.org/blogs_and_comments/commentators/other_comments/924035/nature_isnt_a_commodity_that_should_be_bought_sold_and_traded.html
Contribution from Phil S.:
Time to Wake Up: Days of Abundant Resources and Falling Prices Are Over Forever