Marriott International today unveiled a prototype that will help it build more green, LEED-certified hotels. The prototype is the first of its kind for the U.S. hotel industry, the company says.

LEED, or Leadership in Energy and Environmental Design, is a voluntary rating system developed by the U.S. Green Building Council (USGBC). LEED-certified buildings are designed to meet environmental goals including reducing landfill waste and greenhouse gas emissions, conserving energy and water and lowering operating costs.

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