The Sierra Club's magazine hit a Vertatique double in the March/April issue, but I could not find any indication the Club, magazine, or web site practices green computing.

1.  A profile/interview with Sun Microsystems' Dave Douglas on green computing and related topics.

2.  Stats on sustainability issues in movie productions . . .

PC power supplies are said to waste over a third of the energy they consume. Google claims to have technology that reduces waste to 10% and offered to share it during a presentation at yesterday's Intel Developers Conference.
Surprisingly little coverage of this in the US media, but I found a good report from the UK print media.