The Largest Underwater Volcano Explosion We Almost Missed Mach NBC News

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More than 70% of volcanic activity occurs underwater -- with much of it hidden from human view by seawater. But in 2012, passengers on a flight over the Pacific Ocean saw something odd: a big chunk of floating pumice rock, signaling an underwater volcano had erupted. A new paper published in the journal Science Advances details that 2015 exploration and its surprising discoveries. • » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC • » Watch more NBC video: http://bit.ly/MoreNBCNews • NBC News is a leading source of global news and information. Here you will find clips from NBC Nightly News, Meet The Press, and original digital videos. Subscribe to our channel for news stories, technology, politics, health, entertainment, science, business, and exclusive NBC investigations. • Connect with NBC News Online! • Visit NBCNews.Com: http://nbcnews.to/ReadNBC • Find NBC News on Facebook: http://nbcnews.to/LikeNBC • Follow NBC News on Twitter: http://nbcnews.to/FollowNBC • Follow NBC News on Google+: http://nbcnews.to/PlusNBC • Follow NBC News on Instagram: http://nbcnews.to/InstaNBC • Follow NBC News on Pinterest: http://nbcnews.to/PinNBC • The Largest Underwater Volcano Explosion, We Almost Missed | Mach | NBC News

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