The original content of Democracy Now! Headlines appears under the Creative Commons BY-NC-ND 3.0 License (United States). For more, including their other shows and media, visit www.democracynow.org. June 7, 2012 Study: World Could Face Ecological "Tipping Point" This Century ---------------------------------------------------------------- A new study is warning the combined effects of global warming, population growth and continued environmental degradation could lead to the collapse of the ecosystem in just a few generations. A research paper published in the journal Nature says the world faces a "tipping point" of irreversible environmental damage as early as this century. On Wednesday, the head of the U.N. Environment Program, Achim Steiner, encouraged activists to seize on the report's findings ahead of the key Rio+20 environmental summit in Brazil later this month. Achim Steiner: "I would like those activists who are preparing to come to Rio+20, to protest and to also lament the little action that we have seen; to open up a second fund and to take a report like this and tell them: 'Answer to the public, why are we not moving ahead in these issues.'" .