Definitions of sustainability
Original definition of Brundtland Report:
"The ability to meet the needs of the present generation without compromising the ability of future generations to meet their own needs”
http://www.are.admin.ch/are/en/nachhaltig/international_uno/unterseite02330/

Find additional definitions of sustainability

Sustainability news
>> http://www.environmentalsustainability.info/news/
>> http://www.nachhaltigkeit.at/
>> http://www.sonnenseite.com/fp/archiv/home/home.php

News on social responsible investing & corporate responsibility
>> http://www.socialfunds.com/news/index.cgi
>> http://www.csrwire.com