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 River Cruises operates a fleet of more than 60 vessels as of 2017. All of its ships have been custom built or fully renovated since 1999; 100% of the cabins are outside staterooms with windows or balconies. The ships also have onboard restaurants, bars, lounges, libraries and sun decks.