What is a trophic cascade?  And what do wolves have to do with such a thing?  This video shows how everything in nature is intertwined--and beautiful.

I dunno about you, but I could listen to the narrator of the video read refrigerator instructions.  He has a nice voice, which makes it easier to learn about a global concept.  And it doesn't hurt that the video is top-notch as well.

Video uploaded by Sustainable Man on February 13, 2014.

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