April 5 – Does anyone remember this? WORLD SCIENTISTS' WARNING TO HUMANITY Human beings and the natural world are on a collisioncourse. Human activities inflict harsh and oftenirreversible damage on the environment and on criticalresources. If not checked, many of our current practicesput at serious risk the future that we wish for humansociety and the plant and animal kingdoms, and may so alterthe living world that it will be unable to sustain life inthe manner that we know. Fundamental changes are urgent ifwe are to avoid the collision our present course will bringabout…. Much of this damage is irreversible on a scale ofcenturies or permanent. Other processes appear to poseadditional threats. Increasing levels of gases in theatmosphere from human activities, including carbon dioxidereleased from fossil fuel burning and from deforestation,may alter climate on a global scale. Predictions of globalwarming are still uncertain -- with projected effectsranging from...
Understanding the global-warming world: causes and ramifications.