One thing that has impressed me (and not in a good way) is that the run-up in crude oil prices has encouraged oil companies to step up extraction of oil from tar sands. The process means cooking huge amounts of material at high temperatures and requires big energy inputs per barrel of oil. (See http://en.wikipedia.org/wiki/Tar_sands for the gory details.) As long as prices are high, tar sands are the easy (but expensive) way to keep production up, and Shell, ConocoPhillips, Chevron, and Exxon are all involved in the Canadian deposits. Why bother exploring for new sources, getting more from existing wells, or starting to get serious about alternatives when there is nothing but boreal forest in northern Alberta in your way?
--tim francis-wright