Book excerpt: The Himalaya has profoundly shaped the cultures of the Indian subcontinent, with many Himalayan peaks considered sacred in Hinduism and Buddhism. Some of the world's major rivers – the Indus, the Ganges and the Brahmaputra rise in the Himalayas. These rivers have abundant seasonal and annual water supply. The mountain ranges and river basins share trans-boundary connectedness. Still, mountain people living on hills have limited access to water for drinking and agriculture. Covering around 27% of the Earth’s land surface, the mountains contribute to the sustenance and wellbeing of over half the human population for water, food, and clean energy. Yet mountains are under threat from climate change, land degradation, overexploitation, and natural disasters, with potentially far-reaching and devastating consequences, both for mountain communities and downstream populations. The book covers interdisciplinary domains of science, humanities and commerce, hence beneficial for all types of readers equally. Promotion of awareness and education on conservation and sustainable utilization of bioresources and strengthening networks, coordination with the help of central government departments, state governments, NGOs and local institutions is urgently needed.