Ecohydrology : Branch of hydrology industry that tackles how organisms interact with water at various stages of the water cycle.

Ecolabeling: A labeling system to assess the life cycle impact of a product or service.

Ecological design : Section of ecology that calls upon designers to bring ecological principles into the design projects to conserve energy, reduce toxins, and minimize waste.

Ecological engineering : Industry that integrates the two fields of ecology and engineering to design, monitor, restore, and construct aquatic and land-based ecosystems in a way that benefits humans and the environment. Applications include creating ecosystems to handle storm water in urban areas or restore community forests or wetland areas.

Ecotourism: According to the Mohonk Agreement of 2000, ecotourism is “tourism that seeks to minimize ecological and sociocultural impacts while providing economic benefits to local communities and host countries.”

Electronic waste; e-waste: Discarded TVs, computers, monitors, printers, scanners, mice, keyboards, and cellphones.

Environmental education : A process aimed at developing a world population that is aware of and concerned about the total environment and its associated problems, and which has the knowledge, attitudes, motivations, commitments, and skills to work individually and collectively toward solutions of current problems and the prevention of new ones.

Environmental geography : Branch of geography (the study of earth, including human geography, which refers to the built environment, and physical geography, which consists of the natural environment) which looks at the interactions between humans and the environment in order to understand how the environment is created, managed, and used.

Environmental meteorologist : Scientist that uses his or her expertise to study and evaluate environmental problems, including climate change, air contaminants, greenhouse gas emissions, fresh water shortages, droughts, and ozone depletion. Environmental meteorologists may be called upon to conduct environmental assessments and prepare environmental impact reports on their findings.

Environmental science : An interdisciplinary study of the natural environment from a systems point of view.