Jim Fletcher, a mechanical engineering doctoral student in fuel cell technology, said the bus is 10 percent more efficient than comparable diesel buses -- a first step in what researchers expect will one day be a far more efficient form of transportation.
These traits could be edited into a new form of the same species in a far more precise and accurate way than with the existing tricks in genetics' kit bag.
Absent a common currency in the form of the dollar, the U.S. would still be a rich country, but far less vibrant for all the wasted effort necessary to facilitate interstate trade given 50 different floating money concepts.