Why Eerie Green Lightning Zapped an Erupting Volcano i.livescience.com/images/i/000/060/158/original/green-lightning.jpeg December 09, 2013 http://www.livescience.com/41819-green-lightning-zapped-volcano.html [with comments] -- Images: Grimsvotn Volcano Puts on Lightning Show i.livescience.com/images/i/000/016/853/i02/lightning-bright-110523.jpg May 23, 2011 http://www.livescience.com/14287-images-grimsvotn-volcano-puts-lightning-show.html [with comments]