Over the history, human civilisation has developed in many ways to accommodate the needs and demands of the population. As human population continue to grow rapidly, the development processes have accelerated to an unprecedented rate. This development processes have put immense pressures on the surrounding environment, causing various environmental issues. Protecting the environment and maintaining its integrity is crucial in sustaining human livelihood on this planet. This resonates with the concept of sustainable development where development should also safeguard the protection of environment, social livability and economic prosperity. This book explores the current state of environment in Malaysia by understand the trend and dynamic of changes happening in the various aspects of the environment. Understanding the current state of the environment will assist and facilitate informed decision-making on development activities that promote sustainable development in Malaysia.