The context for this book is the resurgence of the debate between income and environmental degradation and a step towards better-informed debate on growth- environment interface. This book presents empirical investigations on the interacting relationship between income and environmental degradation, and tended to prove the environmental Kuznets curve (EKC) hypothesis based on Malaysian case. Generally, industrializing phase in most countries is accompanied by worsening of environmental quality along the dimensions of air pollution, water pollution and resource depletion. We investigate how economic growth in Malaysia is contributing to environmental pollution in the country. Our results present an EKC type relationship between several pollutants and total real GDP which has additional contribution to environmental Kuznets curve hypothesis.