Guest PasadenaCA Posted May 6, 2014 Share Posted May 6, 2014 I have been following the recent uptick in seismic activity with interest. Here's a comment from the USGS. http://www.usgs.gov/newsroom/article.asp?ID=3880&from=rss_home#.U2h3ZMu9KK0 Quote Link to comment Share on other sites More sharing options...