Introducing the Scientific Consensus on Maintaining Humanity's Life Support Systems in the 21 st Century: Information for Policy Makers

The Anthropocene is recognized (though not yet formally defined) as the time when human impacts are widespread on Earth. While some of the impacts are essential to supporting large human populations and can be sustainable in the long run, others can irretrievably damage the life support systems upon which the global society has come to depend, or spark rapid changes to which societies cannot adapt fast enough. Among these dangerous trends are increasing climate disruption, extinctions, loss of non-human-dominated ecosystems, pollution, and population overgrowth. Interactions between these five trends exacerbate their potential to trigger harmful global change. Reducing the resultant risks requires effective cooperation between scientists and policy makers to develop strategies that guide for environmental health over the next few decades. To that end, the Scientific Consensus on Maintaining Humanity's Life Support Systems in the 21 st Century was written to make accessible to policy makers and others the basic scientific underpinnings and widespread agreement about both the dangers of and the solutions to climate disruption, extinctions, ecosystem loss, pollution and population overgrowth. When it was released in May 2013, the document included endorsements by 522 global change scientists, including dozens of members of various nations' most highly recognized scientific bodies, from 41 countries around the world. Since then, endorsements have grown to more than 1300 scientists plus more than 1700 others - business people, NGO representatives, students, and the general public - spanning more than 60 countries. Now also available in Spanish and Chinese, the document has proven useful in helping to stimulate national and international agreements. Further information about the genesis, uses, the signatories, and how to endorse it can be found at http://consensusforaction.stanford.edu/. Such communication between scientists, policy makers, and the public at large will be essential for effective guidance to address global change as the Anthropocene progresses.