Ph.D. in Environmental Science and Engineering focuses on using scientific and engineering concepts to solve environmental problems like pollution, climate change, and resource sustainability. The program typically lasts 3-5 years and integrates coursework in environmental chemistry, biology, ecology, and engineering with original research. Students study water and air quality, waste management, renewable energy, and environmental modeling. Research may also include the development of new technology for environmental cleanup or sustainable practices. Graduates are equipped to work in academia, government agencies, non-governmental organizations (NGOs), or industry, helping to enhance environmental health and promote sustainable development.