“ Ultra-Efficient Gas Engine Passes Test What is the weight of the vehicle compared to a prius or other vehicles? MPG without this info is not... (read full comment) ” 

Posted on March 8, 2010 at 7:50 AM EST

“ use neutrons created from fusion? Isn't the conversion of u238 to a fissile material easily accomplished with 40 year old technology known as... (read full comment) ” 

Posted on June 26, 2009 at 1:33 AM EDT

“ shale kerogen will change viscosity at the temperatures of the heater and will flow. it will also crack to some extent like in a visbreaker. coal... (read full comment) ” 

Posted on April 24, 2009 at 12:52 AM EDT

+ 1 more comment posted in this discussion

“ geo engineering it seems that in talking about engineering the planet the first thing we have to admit is that we don't know what the affect of... (read full comment) ” 

Posted on April 23, 2009 at 5:17 PM EDT

“ sstar How is this different than the sstar reactor, proposed by Lawrence Livermore some years ago? (read full comment) ” 

Posted on February 27, 2009 at 1:51 PM EST

“ Nukes now The visceral opposition to nuclear power is understandable given the lack of reasonable technical discussions. Any time someone says the... (read full comment) ” 

Posted on February 26, 2009 at 6:20 PM EST

“ Cost and Feasibility The real driver on renewable power based on wind and photovoltaic systems (after technical feasibility) are the costs of... (read full comment) ” 

Posted on February 26, 2009 at 5:27 PM EST

“ one misguided effort after another The Obama program will be ineffective, irritating and expensive to the consumer. People who buy SUV's are not... (read full comment) ” 

Posted on January 27, 2009 at 10:54 PM EST

“ If ethanol was an economic way to produce fuel, all the corn farmers should be using it to run their tractors. The same should hold true for... (read full comment) ” 

Posted on April 25, 2007 at 1:29 PM EDT

“ Just a couple of comments on this subject. If there is no co2 problem there is no carbon supply issue for hundreds of years. The vast stores of... (read full comment) ” 

Posted on March 15, 2007 at 12:18 PM EDT