Environmentalism or environmental rights is a broad philosophy, ideology, and social movement regarding concerns for environmental protection and improvement of the health of the environment, particularly as the measure for this health seeks to incorporate the impact of changes to the environment on humans, animals, plants and non-living matter.

Environmental technology is the application of one or more of environmental science, green chemistry, environmental monitoring and electronic devices to monitor, model and conserve the natural environment and resources, and to curb the negative impacts of human involvement.

A set of requirements usually determined for an area where potential polluting activities may occur. These are usually in the form of legislation for a country or province.

Environmental remediation deals with the removal of pollution or contaminants from environmental media such as soil, groundwater, sediment, or surface water.

An independent executive agency of the United States federal government tasked with environmental protection matters.

Part of the three sustainability pillars, the pillar that focuses on reduction of carbon reduction and general waste.

Environmental law is a collective term encompassing aspects of the law that provide protection to the environment.

The environmental impact of wind power is relatively minor when compared to that of fossil fuel power.

Environmental assessment is the assessment of the environmental consequences of a plan, policy, program, or actual projects prior to the decision to move forward with the proposed action.

An environmental factor, ecological factor or eco factor is any factor, abiotic or biotic, that influences living organisms.

A job type that is a professional engineering discipline investigates and creates solutions that will protect and also improve the health of living organisms and improve the quality of the environment.

Environmental degradation is the deterioration of the environment through depletion of resources such as air, water and soil; the destruction of ecosystems; habitat destruction; the extinction of wildlife; and pollution.

In environmental chemistry, the term "contamination" is in some cases virtually equivalent to pollution, where the main interest is the harm done on a large scale to humans, organisms, or environments.

A measure of how fast we consume resources and generate waste compared to how fast nature can absorb our waste and generate new resources.

Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work.

A dry pulverized solid, an atomized liquid fuel or a fuel slurry is gasified with oxygen in co-current flow.

The enthalpy of vaporization also known as the latent heat of vaporization or heat of evaporation, is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas.

The enthalpy of fusion of a substance, also known as (latent) heat of fusion is the change in its enthalpy resulting from providing energy, typically heat, to a specific quantity of the substance to change its state from a solid to a liquid, at constant pressure.

Enthalpy is a property of a thermodynamic system, and is defined as the sum of the system's internal energy and the product of its pressure and volume.

The temperature of the water entering the heat pump from the ground loop heat exchanger.