<p>The United States Environmental Protection Agency is encouraging people to travel green by choosing hotels that have earned its Energy Star labeling. Such hotels perform in the top 25 percent of hotels nationwide, use at least 35 percent less energy, and emit at least 35 percent less greenhouse gas emissions than their peers. The lodging industry spends more than $7.5 billion on energy each year. Reducing energy use by 10 percent across the industry could save $750 million and help reduce U.S. greenhouse gas emissions by 6 million tons annually.</p>