Six countries produce nearly 60 percent of global carbon dioxide emissions. China and the United States combine for more than two-fifths. The planet's future will be shaped by what these top carbon polluters do about the heat-trapping gases blamed for global warming. How they rank, what they're doing:
Viking River Cruises Tipping Policy. It is customary to give cruise gratuities, subject to your satisfaction of services rendered. Gratuities on board and on land are not included in your full fare.
River Cruises Through the Worldâs Must-See Destinations. When it comes to river cruising, Viking River Cruises is the world leader. From Europe to Russia, from China to Southeast Asia, we offer cruises that allow you to fully experience the wonders of each region. Discover the Far East with a fascinating cruisetour along the Yangtze, Mekong or Irrawaddy Rivers.