From an environmental point of view, mountains are particularly sensitive and important for monitoring the state of health of our planet. Only through distribution of meteoclimatic and atmospheric composition monitoring points in mountain regions, coupled with modelling simulations, will we be able to thoroughly analyze complex pollutant transport mechanisms and better understand imminent global changes. The Himalayan-Karakoram range. For its elevation and geographic location, represents one of the ideal places for studying long-range pollutant transport systems on a regional scale and for monitoring changes index by mechanisms that act on global scale through monsoon circulation. The Ev-K2-CNR committee with this book reached its objective of creating a unique opportunity for dialogue between major environmental scientists and experts, highlighting the close relationship between diverse themes with a common underlying thread: in-depth comprehension of the environmental phenomena which are determining the health of our planet.