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1、global warming,Global warming caused by CO2 emissions is one of the most urgent issues facing humanity and our planet. CO2 emissions reached 8.5 billion tons in 2008, with 75% being cause by the combustion of fossil fuels. 2010 was the hottest year on record, with 19 countries breaking all time heat
2、 records. July of 2011 saw every state in the US break all time temperature records. We are the cause of this great warming;,The Cause,Obesity Epidemic: Obesity rates have tripled in the last 25 years. With 50% of all automobile travel occurring for trips that are three miles or less, the opportunit
3、y to supplement driving with more exercise intensive forms of transportation such as cycling and walking are all around us. Such lifestyle changes also have significant environmental and economic advantages.,Economic Improvement: Last year, obesity related health complications in the US cost $147 bi
4、llion dollars. The amount spent on foreign oil was $344 billion dollars. With schools spending more on utilities than textbooksand computers, the time to improve our economic sustainability is now.,The effect of each tempeature rise,Temperature rises to six degrees from once,1,2,3,4,5,6,The temperat
5、ure rise 1,After one degree Celsius(摄氏度selsis)rise in temperature ， half of the year in the Arctic(北极) will be ice-free state ，South Atlantic（大西洋的） coastal（沿海地区） areas, will suffer hurricane （飓风），residents （居民）in the western United States will also face serious long-term droughts,The temperature ris
6、e 2,After two degrees Celsius rise in temperature ，gradually melting ice（融冰）, coral reefs （珊瑚礁） have gradually disappeared, and the global sea level rise seven meters.,The temperature rise 3,After three degrees Celsius rise in temperature , Europe will continue to suffer in the hot weather, tens of
7、millions or billions of refugees from sub-tropical（亚热带） to move to mid-latitudes（中纬度）.,The temperature rise 4,After four degrees Celsius rise in temperature , sea-level rise and flood (淹没) coastal cities; glaciers disappear, causing serious water shortages in many areas; And,London summer temperatur
8、es as high as 45 degrees Celsius.,The tempeature rise 5,After five degrees Celsius rise in temperature ，the areas not suitable for living are expanding ，the supply（供给） of water in some big cities of snow and aquifers dry up phenomenon, millions of people become climate refugees（气候灾民）,The temperature
9、 rise 6,After six degrees Celsius rise in temperature， hydrogen sulfide（硫化氢） and methane （甲烷） caused the fire from time to time; In addition to bacteria（细菌）, there is no any creature can survive “Armageddon（世界末日）,” is really start！,Tsunamis can kill one hundred times more than 911 people, the earth is very strong, please respect her and protect her!海啸能干掉比911多百倍的人，地球很强大，请尊重她，保护她,Thank you,演讲者：27 制作ppt:17,26,31 资料：19,27,30,
