At the Earth Summit in Rio de Janeiro in 1992, the world’s nations signed up to the Framework Convention on Climate Change (FCCC), the objective of which is “to stabilize the concentration of greenhouse gases in the atmosphere at a level that does not cause dangerous interference with the climate system…, that allows ecosystems to adapt naturally to climate change, that ensures food production is not threatened, and that enables economic development to proceed in a sustainable manner.” Such stabilization would also eventually stop further climate change.
1992年在里约热内卢召开的地球问题首脑会议上，世界各国签署了气候变化框架公约（FCCC） ，其目标是“把大气中的温室气体浓度稳定在一定的水平，以避免造成对气候系统的危险的干扰... ，以使生态系统自然地适应气候变化，确保粮食生产不受到威胁，而且使经济以可持续的方式发展”。这样的稳定策略最终也将阻止进一步的气候变化。