“ The AC will have to cool down to very low levels to make dry ice, which is inefficient; heat pumps need small temperature differences for maximum... (read full comment) ” 

Posted on November 17, 2009 at 2:40 PM EST

+ 5 more comments posted in this discussion

“ Going from CO2 to CO is doable. Going back to pure carbon is very difficult. It almost certainly cannot be done directly (ie using a one pass... (read full comment) ” 

Posted on December 27, 2009 at 7:50 AM EST

“ Yeah. Sounds way too fantastic. That claim may have something to do with venturi mechanisms. Even then, FloDesign doesn't really look that... (read full comment) ” 

Posted on December 24, 2009 at 11:04 AM EST

+ 1 more comment posted in this discussion

“ Carbon is indeed a macro nutrient, though fertilizer may not be the correct word for CO2. But I see your point; the vast majority of plant species... (read full comment) ” 

Posted on December 23, 2009 at 12:55 PM EST

+ 1 more comment posted in this discussion

“ Actually salt can be quite corrosive to a lot of materials, especially hot molten salt. Most inorganic salts such as the sodium chloride here... (read full comment) ” 

Posted on December 6, 2009 at 7:22 AM EST

“ Many factors Of course, many things do change with temperature: density of the radioactive material, which influences emissions of particles per... (read full comment) ” 

Posted on November 18, 2009 at 9:39 AM EST

“ It's strange how often terrorism is mentioned for electric lines. Gas and oil pipelines carry far more energy, sometimes an order of magnitude... (read full comment) ” 

Posted on November 15, 2009 at 9:43 AM EST

“ You're quite right, the VAWT is less efficient. Then again, no one has built a really BIG VAWT (like 5 MW) yet and they could be much more... (read full comment) ” 

Posted on November 9, 2009 at 9:13 AM EST

+ 1 more comment posted in this discussion

“ Maybe. Military funding and research, and subsequent application may sometimes help technologies get past the risky phase and spinoff to quickly... (read full comment) ” 

Posted on November 9, 2009 at 9:03 AM EST

“ Agreed, this is a non-issue and possibly a smokescreen created by those who lobby against wind turbines or those that don't want to modernise radar... (read full comment) ” 

Posted on November 9, 2009 at 8:52 AM EST