Do you think of chemical engineers as life scientists? How about petroleum engineers? Surely there's nothing biological going on in a tank of gasoline? Not now perhaps, but millions of years ago that black ooze we call crude oil was alive, in the form of plant and animal matter. Hurrying the chemical breakdown of living matter into something we can burn in our cars is the challenge for some of today's brightest chemical engineers who work on turning algae into fuel in an efficient, sustainable green chemistry process.