마스옵저버 패스파인더는 왜 뻗었을까.
http://catless.ncl.ac.uk/Risks/19.49.html
첫 페이지 http://catless.ncl.ac.uk/Risks
The Risks Digest
Forum On Risks To The Public In Computers And Related Systems
몰랐는데 RSS도 제공하네.