Photographing U.S. History
natural gas, but methanol or synthetic gas can also be used. The cells are enormously efficient. They capture about 40 percent of the energy in natural gas; conventional gas tur- bines, contrast, achieve only 30 percent efficiency.
A fuel cell provided electricity and drinking water for the two U.S. as- tronauts who flew Gemini V in 1965, but there have been problems bringing the technology down to earth. A small demonstration plant in New York City is already a year late for start up thanks to...