“ Any holder of outdated, expensive technology in any field is going to face the same challenge, when to buy the new stuff. And the answer is always... (read full comment) ” 

Posted on December 14, 2011 at 12:20 AM EST

“ The Stern report suggested that a $1T yearly investment in climate change would pay off over the next century. The estimated cost of a space... (read full comment) ” 

Posted on February 18, 2007 at 5:32 PM EST