http://mcmeng.com/aircraft-cable-scuff-guard/ In case anyone missed, it,  Andrew Revkin’s post on the possible unintended effects of a renewable energy breakthrough is must reading. Revkin’s provocative thought experiment has inspired a lively conversation on his essential blog, dotearth, with over 100 comments. Reader reactions have run the gamut, but the one that caught my eye was this one,… http://kennytree.com/favorite-sites/ Continue Reading…