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:
River cruise companies also have their own tipping policies. A handful, such as Scenic Tours, Avalon Waterways and Tauck, include gratuities in their overall price, while Viking River Cruises recommends that guests tip at the end of the trip at a rate of between Â£5 and Â£10 a day.
The Viking River Cruises Longships all have 95 outside staterooms that fall into the following categories: 1  2 Explorer Suites. 2  7 Veranda Suites. 3  39 Veranda Staterooms.  22 French Balcony 1  Staterooms. 25 Standard Staterooms.