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.
Several cruise ship lines, such as Carnival Cruise Lines, automatically charge you for tips and gratuity at the start of the cruise. Tipping on Princess Cruise Ship or on the Crown Princess is also automatic -- according to the Princess Cruise Line web site, a hotel and dining charge of $10 per day per person is added to your shipboard account. Automatic tip charges can usually be increased or decresaed at the Purser's Reception desk onboard.