December 11, 2013 is UN International Mountain Day.
Here is a nice video made by the Food and Agricultural Organization of the United Nations that explains the importance of mountains as the key to a sustainable future, and how they are susceptible to climate change:
This project is in no way affiliated with the UN. However, I did get that moment of epiphany when I learned about it through my research for this project. This song started to play in my head.