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.
Viking Cruises. Viking Cruises is a privately owned, professionally managed company offering river and ocean cruises. Its destination-focused river and ocean itineraries are designed for experienced travelers with an interest in geography, culture and history. It is the parent company of Viking River Cruises and Viking Ocean Cruises.