One of the more interesting developments in the energy industry is that of gas to liquid conversion via the Fischer-Tropsch process, which dates to interwar Germany. Through this process, natural gas can be converted into diesel fuel for use in vehicles. What's more, using GTL diesel is claimed to result in up to 91% less carbon monoxide, 64% less hydrocarbon, and 26% less particulate emissions than regular diesel. It sounds great, right? More fuel supplies with less pollution in the process. Shell has a website pimping (I can use this term, not MSNBC commentators) its GTL technology that even features a globetrotting love story [!] Hollywood aspirations aside, there's quite a lot of informative stuff. The advertising pitch Shell is making is with more folks flocking to cities around the world, this technology promises less pollution in major urban areas.