Starwood Hotels & Resorts Worldwide introduced sustainable-meeting guidelines on Monday, intended to formalize green practices for all of the company's North American properties. The guidelines, which will roll out globally in 2011, revolve around five core components: paperless meeting planning, sustainable meeting services, sustainable food and beverage practices, impact assessment tools and socially conscious activities. Among the five components are 18 cost-effective and efficient practices that will be incorporated into every on-site event. They range from sustainable menu choices and alternatives to bottled water, to energy-efficient digital signage and potted plants in place of fresh-cut flowers. The hotel company also will offer a Meeting Impact Report, an online client tool that details the environmental impact of each meeting. More details are available here.