What a 620 ton boulder could mean for climate change

Research led by Ronadh Cox charted the movement of thousands of coastal rocks, including a 620 ton boulder that moved 2.5 meters after the 2013-2014 winter storms. Subscribe to The Washington Post on YouTube: http://bit.ly/2qiJ4dy

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(Source: Washington Post, https://www.youtube.com/watch?v=exGvRjB3JGc)