“ They can reach 19.8 km altitude -- 65,000 feet if I converted right. Commercial planes rarely exceed 40,000 feet. They'll probably be above any... (read full comment) ” 

Posted on March 30, 2010 at 10:34 PM EDT

“ How about for rail and ship? Would it be useful for powering ships and railroad locomotives? If the fuel cells don't put out carbon monoxide,... (read full comment) ” 

Posted on March 21, 2010 at 9:34 PM EDT

+ 1 more comment posted in this discussion

“ A small aircraft engine? Improving the fuel efficiency of piston engine airplanes might be the most important application. Gas stations are a lot... (read full comment) ” 

Posted on March 21, 2010 at 9:23 PM EDT

“ Backup power for the home? Short of feeding power back into the grid when there's a power failure, lots of people would be happy just to have the... (read full comment) ” 

Posted on March 21, 2010 at 8:45 PM EDT

“ Maybe 500 yards? I worked in a lab that studied insects, particularly mosquitoes, in the summer of 1964. I THINK I remember hearing that figure... (read full comment) ” 

Posted on March 21, 2010 at 8:31 PM EDT

“ The water coming back up the 'second' hole would be hot, rich in magnesium carbonate, poor in dissolved CO2, and more alkaline than the surrounding... (read full comment) ” 

Posted on November 9, 2008 at 5:50 PM EST