In 1979, the "Ley de Aviaciýn Comercial" (Commercial Aviation Act) was passed in Chile. Its main goal was to improve the air transport by means of "Open Sky Policies", competence (freedom of prices) and a progressive lesser intervention of the official authority. Since then an international air...

We model dynamic mechanisms for a global commons. Countries benefit from both consumption and aggregate conservation of an open access resource. A country's relative value of consumption-to-conservation is privately observed and evolves stochastically. An optimal quota maximizes world welfare...