Did you know? National Public Radio has been under pressure from conservatives for its alleged liberal bias, but Jeffrey A. Dvorkin, NPR ombudsman, notes that NPR draws on many think tanks for its commentary. A tally of commentaries by think tank experts in 2005 indicates that interviewees more often came from the right than the left: 239 from the right, 141 from the left (www.npr.org, December 14).