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Terms for Green Architecture, Building & Energy

This glossary includes more than 300 solar terms, as well as hundreds of additional sustainable design and construction terms.

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Definition 1: A naturally occurring radioactive gas found in soils, rock, and water, which causes lung cancer, and is a threat to health because it tends to collect in homes, sometimes to very high concentrations.

Definition 2: A radioactive, colorless, odorless gas that occurs naturally. When trapped in buildings, concentration build up, and it can cause health hazards such as lung cancer.