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Radon

Radon

Radon is a radioactive gas formed in the decay of uranium that is a serious air pollutant. Radon typically enters a building through cracks in the foundation. Read more.

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Ramie fibre

Ramie fibre

The perennial stalk producing ramie plant has been cultivated in eastern Asia for fibre since prehistoric times. Growing 3-8 feet high, with heart-shaped leaves, the plant’s fibre was used in fabric in ancient Egypt and was known in Europe during the middle Ages. Read more..

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