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To get the seal, a company must pay for testing by an independent AOA-chosen lab and also pay a licensing fee for use of the seal.
WSJ: Contacts Lenses That Let In Sun, But Block UV Rays
Saunders suggests Green Seal, a US-based non-profit that evaluates hotels, among other products, for a fee, and grants a bronze, silver or gold certification based on general sustainability.
BBC: Can hotels be truly carbon neutral?
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