The idea of safeguarding and managing the global commons, particularly those related to the physical environment, is now widely accepted. This requires financing.
Possibilities include: surcharges on airline tickets for use of increasingly congested flight lanes; a charge on ocean maritime transport, reflecting the need for ocean pollution control; user fees for ocean, non-coastal fishing, reflecting the pressures on many stocks and the costs of research and surveillance; special user fees for activities in Antarctica so as to fund conservation there; parking fees for geostationary satellites; charges for use of the electromagnetic spectrum.