The rate at which air enters and exits a building or home.

Materials sourced directly from nature in their raw form, such as wood or metal ores.

An area that has been excavated or engineered for depositing hazardous waste.

The primary assessment tool used by the US Environmental Protection Agency (EPA) to evaluate health and environmental risks posed by abandoned or uncontrolled hazardous waste sites.

Any manmade substance that poses a physical danger or health hazard to plants, animals and humans.

A group of air pollutants classified under the US Clean Air Act as dangerous to human health and detrimental to the environment.

A shredding machine that can be used for various materials and purposes, such as garden waste for composting, garbage disposal, shredding paper and grinding shipping pallets for mulch.

Involves the circulation, recycling and conservation of the earth’s water which is crucial to sustaining all forms of life in the planet.

Water found in the earth’s bodies of water such as lakes, rivers and oceans.

Groundwater is water that comes from rain, snow, sleet and hail that soak into the ground and is accumulated in lower layers of soil that act as a sponge that hold the water.

A radioactive element that is naturally present in low concentrations in soil, rock and water.

A field of study involving tiny, nano scale substances no bigger than 100 nanometers which are used for optical, magnetic, electrical and other types of products.