A graduate student studying the effects of advanced biodiesel fuel on a John Deere engine.
Silicon Valley is recognized as the spawning ground of technology start-ups in the world of computers. Lower Manhattan has long been the place to set up shop for financial institutions. And of course the epicenter of American automaking is Detroit. Detroit has been evolving in recent times from a manufacturing center to a headquarters city. Still, there is no guaranty that its dominance is permanent.