The Trans-Himalayan region of Ladakh has witnessed important changes linked to its geo-strategic importance, the rapid development of means of communication with other parts of India, socio-economic transformation processes and the effects of climate change. The sixteen chapters document these key changes, ranging from melting glaciers and extreme weather events to the exponential increase in infrastructure, tourist and military activities. The book examines the impact these changes are having on the environment and on the socio-economics and identity of Ladakhi communities. The book also attempts to evaluate the likely direction of future changes, identify some of the main environmental challenges faced by Ladakh in the 21st century, and provide perspectives for sustainable development of the high mountain region.