en-us Mars dust opacity http://www.lpl.arizona.edu/~lemmon/mars-tau-b.html A quick update for current Martian weather. Wed, 16 May 2012 14:01:36 GMT Wed, 16 May 2012 14:01:36 GMT http://blogs.law.harvard.edu/tech/rss Tau on sol B/2954 is 0.42. http://www.lpl.arizona.edu/~lemmon/mars-tau-b.html Wed, 16 May 2012 14:01:36 GMT