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.
Cruise lines with the best â and worst â tipping policies. Published: June 25, 2014 12:02 p.m. Many cruise lines have been quietly raising automatic gratuities, which means cruisers may be paying out more in tips to cruise staff.