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.
Prices do not include gratuities for local shore excursion guides, drivers, and related service staff. Independent, subcontracted ground operator companies employ all ground staff and these entities do not participate in Seabourn Cruises' on board no tipping practice.