Watch the largest ever witnessed glacier calving event

Via a blog posting on NPR, below is an excerpt from the recent Academy Award nominated documentary "Chasing Ice" showing highlights of a 75 minute glacier calving event recorded in Greenland.

At the end is a time-lapse sequence of the entire event along with some visuals to put the size in perspective.  Really amazing stuff!

While on the subject of metaphors, this is a nice example of processes that are in general very slow moving but when tipping points are reached suddenly and dramatically accelerate.  Climate change is such a process, this is rather scary.  But so are social and political movements, and this provides at least a bit of hope.