“ The cars are communal. Much like Zip Car, a user doesn't own any one car. (read full comment) ” 

Posted on November 5, 2007 at 10:47 AM EST

“ A virus is one possibility: http://www.technologyreview.com/Biotech/19348/ (read full comment) ” 

Posted on November 5, 2007 at 10:45 AM EST

“ Note that this is a blog, not an article. She is trying to encourage conversation. (read full comment) ” 

Posted on August 20, 2007 at 2:05 PM EDT

“ You are quite right! It's 60 milligrams. (read full comment) ” 

Posted on July 19, 2007 at 11:46 AM EDT

“ Thank you Scott, for pointing out that error. We've corrected it in the story. (read full comment) ” 

Posted on June 20, 2007 at 10:13 AM EDT

“ Clicking the "Print" button at the top brings up the whole story in one single page. (read full comment) ” 

Posted on December 5, 2006 at 11:16 AM EST