This report has been developed to consider the complexities of environmental changes and their impacts. It has been built on the principals of the IPCC and IPBES. This assessment report has used climate, water body, ecosystem and human impacts to quantify the environmental changes in the TP. Chapter II of this report discusses the basic facts about past and present environmental changes in the TP, with special focus on the impact of environment changes and human activities. Chapter III focuses on the impacts of human activities on the environment, highlighting the external and internal impacts on biodiversity and human sustainability in the region. Chapter IV explores, where feasible, projections of future changes for both near-term (present–2050) and long-term (2051–2100) environmental scenarios. This report is the first comprehensive scientific assessment of environmental changes over the TP. The core of this assessment revolves around significant impacts resulting from environmental changes and human activities over the TP, and future scenarios.