Environmental engineering is the branch of engineering which applies knowledge of science and principles of engineering to modify changes in environment like in air, water, resources and soon. They conduct research on environmental impact like construction projects, analyzing and quality control. They conduct and study on the effect of environmental changes in human life like acid rain ozone depletion and soon. They work for environmental protection, this can be in various sources like protecting the wild life, waste water management, public health, toxic material control and soon. This is the best career option for the own who is dedicated to protect our natural resource.