The Intergovernmental Panel on Climate Change (IPCC) has been studying the phenomenon since 1988. Twenty-two years ago, the United Nations Framework Convention on Climate Change (UNFCCC) was unveiled; today, 195 countries have agreed to prevent dangerous global warming by limiting the increase in global temperature to 2⁰C.
多年前我们就知道，气候变化就是地球这幢房子地基上的裂缝。国际气候变化委员会（Intergovernmental Panel on Climate Change，IPCC）自1988年以来就在研究这一现象。二十二年前，联合国气候变化框架公约（Framework Convention on Climate Change，UNFCCC）诞生；如今，195个国家同意通过限制全球升温幅度在2℃内以防止危险的全球变暖。