We are facing a world of declining energy and resource availability and this will have profound effects on our society and lifestyle.

energybulletin.net
essential website on energy and resource availability 
energywatchgroup.org
publications of international network of scientists
transitionculture.org
'an evolving exploration into the head, heart and hands of energy descent' 
theoildrum.com
discussions about energy and our future. great resources
postcarbon.org
the post carbon institute assists communities in the effort to relocalize and to adapt to an energy constrained world
peakoil.net
ASPO international (Association for the study of peak oil and gas)
energiekrise.de
ASPO Germany 
crudeimpact.com  /  watch an excerpt of the movie
website of peak oil documentary 'Crude Impact' by James Jandak Wood 
oilcrashmovie.com
website of peak oil documentary 'A Crude Awakening' by Basil Gelpke & Ray McCormack
peakoil.de
german site on peak oil
earthtrends.wri.org
information on environmental, social and economic trends provided by the world resources institute
bine.info
all on renewable energies (german)

The permaculture concept, as well as the transition towns model integrates this knowledge and thus offers one possibility to find pathways towards an alternative form of society. The very basis for this concept is a systemic/integrated view of life .