Biologist Doris Taylor and her team at the University of Minnesota have created a whole new approach: Take a donor heart, remove the cells, and put the patient's cells back into it. The technique promises not only to shrink the transplant waiting list but also to keep patients' bodies from rejecting their new hearts.Our Terry Johnson covered this technology in his Ask a Biogeek column.
Inside the fuel cell: Hydrogen and air flow from top to bottom in Honda's fuel cell through wave-shaped channels. Along the way, an electrolyte surface transforms the hydrogen into water and electrons. The cooling system runs horizontally through the channels to keep the cell from overheating.