“ This kind of R&D stimulus will actually make our kids proud we spent it and make thir lives easier. I am more concerned that the spending is well... (read full comment) ” 

Posted on September 13, 2010 at 4:20 AM EDT

“ Vehicle weight Note that 0.1% decrease in vehicle weight is about 4-5 lbs. Clean stuff out of your trunk, pump up those tires, or just drive naked... (read full comment) ” 

Posted on September 3, 2009 at 2:29 PM EDT

“ Energy Storage Good article on linking solar power with hydrogen with energy storage for intermittent sources. However, I take issue with the... (read full comment) ” 

Posted on November 5, 2008 at 8:55 AM EST

“ Go Hokies! (read full comment) ” 

Posted on March 29, 2007 at 11:26 AM EDT

“ You seem very dated on your knowledge of diesel engines. Note that from a basic thermodynamic model, the hotter an engine runs the more efficient... (read full comment) ” 

Posted on March 27, 2007 at 11:29 AM EDT