The estimated cost of measures to limit Earth-warming greenhouse gas emissions can be more than offset by reductions in deaths and disease from air pollution, researchers said on Saturday. To date, the average global temperature is thought to have increased by 1 C since the Industrial Revolution It would cost $22.1 trillion (17.9 trillion euros) to $41.6 trillion between 2020 and 2050 for the world to hold average global warming under two degrees Celsius (3.6 degrees Fahrenheit), a team projected in The Lancet Planetary Health journal. For the lower, aspirational limit of 1.5 C, the cost would be between $39.7 trillion and $56.1 trillion, they estimated. But air pollution deaths could be reduced by 21-27 percent to about 100 million between 2020 and 2050 under the 2 C scenario, the team estimated, and by 28-32 percent to about 90 million at 1.5 C. "Depending on the strategy used to mitigate climate change, estimates suggest that the health savings from reduced air pollution could … [Read more...] about Health savings outweigh costs of limiting global warming: study
Limit global warming
Last year was the hottest on record by a wide margin, with temperatures creeping close to a ceiling set by almost 200 nations for limiting global warming, the European Union's Copernicus Climate Change Service said on Thursday. The data are the first of the New Year to confirm many projections that 2016 will exceed 2015 as the warmest since reliable records began in the 19th century, it said in a report. The Arctic was the region showing the sharpest rise in temperatures, while many other areas of the globe, including parts of Africa and Asia, also suffered unusual heat, it said. A few parts of South America and Antarctica were cooler than normal. Global surface temperatures in 2016 averaged 14.8 degrees Celsius (58.64°F), or 1.3C (2.3F) higher than estimated before the Industrial Revolution ushered in wide use of fossil fuels, the EU body said. In 2015, almost 200 nations agreed at a summit in Paris to limit global warming to "well below" 2C above pre-industrial times while … [Read more...] about World heat shatters records in 2016 in new sign of global warming
Global warming is expected to unleash more rain, exposing millions more people to river flooding particularly in the United States and parts of Asia, Africa and central Europe, researchers said Wednesday. The study in the journal Science Advances calculates how much more flood protection will be needed to keep the risks of high-end floods constant in the next 25 years. Unless actions are taken -- such as enhancing dykes, boosting building standards, relocating settlements and managing rivers -- the number of people affected by devastating floods could skyrocket, warns the report, based on models that are 10 times more precise than commonly used climate computer simulations. Asia -- the continent with the largest historical high-end flood risk -- would get hit the hardest, with the number of people affected by river flooding projected to go from 70 to 156 million by 2040, it said. For instance, Pakistan, already prone to flooding, "will observe almost a doubling in high-end flood … [Read more...] about Global warming will expose millions more to floods
There has been no reverse in the trend of global warming and there is still consistent evidence for man-made climate change, the head of the U.N. World Meteorological Organisation (WMO) said on Monday. A slow-down in the average pace of warming at the planet's surface this century has been cited by "climate skeptics" as evidence that climate change is not happening at the potentially catastrophic rate predicted by a U.N. panel of scientists. But U.N. weather agency chief Michel Jarraud said ocean temperatures, in particular, were rising fast, and extreme weather events, forecast by climate scientists, showed climate change was inevitable for the coming centuries. "There is no standstill in global warming," Jarraud said as he presented the WMO's annual review of the world's climate which concluded that 2013 tied with 2007 as the sixth hottest year since 1850 when recording of annual figures began. "The warming of our oceans has accelerated, and at lower depths. More than 90 percent … [Read more...] about Global warming not stopped, will go on for centuries: WMO
Faster action is needed to keep global warming to agreed limits and delays until 2030 could force reliance on technologies to extract greenhouse gases from the air, a UN report said on Sunday. The study, drawing on the work of more than 1,000 experts, said a shift from fossil fuels to low-carbon energy such as wind, solar or nuclear power was affordable and would shave only about 0.06 percentage point a year off world economic growth. "We have a window of opportunity for the next decade, and maximum the next two decades" to act at moderate costs, said Ottmar Edenhofer, co-chair of a Berlin meeting of the Intergovernmental Panel on Climate Change (IPCC). "I'm not saying it's costless. I'm not saying climate policy is a free lunch. But it's a lunch worthwhile to buy," he said. The report, endorsed by governments, is meant as the main scientific guide for nations working on a U.N. deal to be agreed in late 2015 to rein in world greenhouse gas emissions that have hit repeated highs, … [Read more...] about Act fast to curb global warming, or extract CO2 from air: U.N.