The “Look I’m holding a snowball crowd”, please ignore this thread. I won’t be debating the existence of global warming with you. I listened to an alarming interview this morning on NPR with the author of this book: The Uninhabital Earth who claims that before, the worst case temp increase ceiling was a 2deg C temp rise, and that now 2deg has become the base and the new ceiling has been adjusted by global warming experts to 4 degrees which results in a rather horrific outcome. Even at 2deg, the estimate is 150M dead from a hostile climate, food production cut in half. Impacts of a 4°C global warming https://www.greenfacts.org/en/impacts-global-warming/l-2/index.htm This report spells out what the world would be like if it warmed by 4 degrees Celsius, which is what scientists are nearly unanimously predicting will happen by the end of the century if no significant policy changes are undertaken. It is a stark reminder that climate change affects everything. The solutions lie in effective risk management and ensuring all our work, all our thinking, is designed with the threat of a world in which warming reaches 4°C above preindustrial levels (hereafter referred to as a 4°C world ) in mind. The President of the World Bank Group, is very clear in its foreword of the report : The explored consequences of an increase of the global earth temperature of 4°C are indeed devastating. Among the foreseen consequences are: the inundation of coastal cities; increasing risks for food production potentially leading to higher malnutrition rates; many dry regions becoming dryer and wet regions wetter; unprecedented heat waves in many regions, especially in the tropics; substantially exacerbated water scarcity in many regions; increased frequency of high-intensity tropical cyclones; irreversible loss of biodiversity, including coral reef systems. The scientific evidence, is unequivocal about the fact that humans are the cause of global warming, and that major changes are already being observed: global mean temperature is now 0.8°C above pre industrial levels; oceans have warmed by 0.09°C since the 1950s and are acidifying. Sea levels rose by about 20 cm since pre-industrial times and are now rising at 3.2 cm per decade; an exceptional number of extreme heat waves occurred in the last decade; major food crop growing areas are increasingly affected by drought.