10 TECH CONCEPTS You Need To Know For 2010

摘要

Coal is dirty, and fuel cells run on hydrogen-that's the conventional wisdom. But a new generation of "direct carbon" fuel cells challenges that. Instead of relying on hard-to-produce hydrogen, these cells pull their power from an electrochemical reaction between oxygen and pulverized coal (or some other source of carbon, like biomass). The advantage: carbon-based energy production that requires no combustion,