Marriott-branded hotels in the United Kingdom have successfully reduced carbon emissions and greenhouse gases collectively by 7.3 percent to earn Carbon Trust Standard certification, a government program launched in 2008 in response to the U.K.'s Climate Change Act to benchmark and assess company commitment and success in addressing climate change impact. In addition, 25 hotels will achieve Green Tourism Business Scheme (GTBS) certification, a program validated by Visit Britain and the International Centre for Responsible Tourism (ICRT) which assesses energy and water efficiency, waste management and biodiversity, by year-end. One of the improvements involves the greening of all Marriott golf courses. Last year, the company announced a goal to have all of its golf courses certified by the Audubon International Cooperative Sanctuary, a program that helps golf courses protect natural wildlife habitats, improve efficiency and minimize potentially harmful effec…