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 Sea. Expand your horizons on comfortable, state-of-the-art ships, intimate and thoughtfully created by experienced nautical architects and designers to enrich your interaction with your destination in every way. Each sister ship carries only 930 guests and is engineered at a scale that allows direct access into most ports.