From what I can see, Environmental- (due to global warming), Alternative Energy/Biofuels (as Oil prices race to $100/ barrel again ), Power/Utility (to redesign power grids and integrate alternative sources) and for the Oil folks-Offshore Petroleum engineering services (to mine oil from the miles deep into the sea). Those in these fields can diversify, but when you have all your experience in High tech-semi conductor industry that is sailing off to the Asia, despite using the same instrumentation like other fields, no recruiter really wants to look at you or pass you onto another employer to diversify your skill set. For the Oil folks- question, I hear this industry is a boom and bust type, is this true, do they hire and fire as a function of the price of oil?