“ That is a great idea. How long before we see integrated water heating and photovoltaic systems? You could image a system that handles the infrared... (read full comment) ” 

Posted on May 11, 2007 at 12:47 PM EDT

“ In our energy-aware climate this is important. Yet, in space applications, we can afford to invest a substantial sum of energy towards creating a... (read full comment) ” 

Posted on April 17, 2007 at 12:37 PM EDT