Global warming is caused by human emissions of greenhouse gases like carbon dioxide and methane. The evidence of global warming includes rising surface temperatures, extreme weather events, and melting glaciers and sea ice. If emissions are not reduced, global warming will have severe consequences like rising sea levels, worsening droughts and floods, and disrupted ecosystems. Individuals and governments need to take action by reducing emissions through changes like using renewable energy and fuel-efficient vehicles.

1. Global Warming Impact Solutions Actions by: Alyse Lysgaard

2. What is global warming? Global warming is the increase in the average temperature of the near-surface air and oceans of the Earth. This phenomena has been occurring since the mid-20th century and it is projected to continue.

3. What is the cause of global warming? Scientists have determined that a number of human activities are contributing to global warming by adding excessive amounts of greenhouse gases to the atmosphere. Greenhouse gases such as carbon dioxide accumulate in the atmosphere and trap heat that normally would exit into outer space.

4. Explanation of the causes of global warming

5. What exactly are greenhouse gases?

6. Selected Greenhouse Gases Carbon Dioxide (CO 2 ) Source: Fossil fuel burning, deforestation Anthropogenic increase: 30% Average atmospheric residence time: 500 years Methane (CH 4 ) Source: Rice cultivation, cattle & sheep ranching, decay from landfills, mining Anthropogenic increase: 145% Average atmospheric residence time: 7-10 years Nitrous oxide (N 2 O) Source: Industry and agriculture (fertilizers) Anthropogenic increase: 15% Average atmospheric residence time: 140-190 years

7. Where Do These Greenhouse Gases Come From?

8. US Fossil Fuel CO2 Emissions

9. US CO2 Emissions

10. US Greenhouse Emissions

11. Important Data

12. More Important Data

13. Why should we be concerned about Global Warming?

14. Global Warming is the greatest environmental threat of the 21 st Century by many scientists, researchers and environmentalists. In the late 1990s scientists reached a consensus that global warming was a cause for concern. So, why should you be concerned about global warming? “ Why Should I Care?”

16. What is the evidence of global warming? Global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the 100 years ending in 2005 The Intergovernmental Panel on Climate Change (IPCC) concludes that most of the temperature increase since the mid-twentieth century is "very likely" due to the increase in anthropogenic greenhouse gas concentrations. More frequent extreme weather is happening all over the globe. Sea ice is melting in the Arctic and Antarctic Oceans.

18. More evidence! The atmospheric levels of the greenhouse gas carbon dioxide, have been increasing since pre-industrial times from 280 part per million (ppm) to 377.5 ppm (2004 Carbon Dioxide Information Analysis Center), a 34% increase. Carbon dioxide concentrations in the atmosphere are the highest in 650,000 years. Levels of atmospheric methane, a powerful greenhouse gas, have risen 145% in the last 100 years

19. Major greenhouse gas emitters Most greenhouse emissions come from developed countries US and Australia are leaders The US, with 6% of the world’s population, contributes 25% of the total emissions

20. Sources of emissions Industry (primarily electric power generation and cement production) is the leader Transportation is second

21. Still more evidence… Disappearing glaciers Ice is melting all over the planet. Glaciers are melting on six continents!

22. Alaska's glaciers are receding at twice the rate previously thought, according to a new study published in the July 19, 2002 Science. Note how the ice has pulled nearly out of sight from 1914 to 2004.

23. Predicted precipitation changes Overall increase in precipitation Some areas (Arctic, Sahara, Antarctic) become wetter Other areas become drier Annual mean precipitation change: 2071 to 2100 Relative to 1990 Source: IPCC, 2001

24. Sea level rise Global sea level will rise between 0.3 and 0.9 meters, depending on scenario Causes: melting polar ice, thermal expansion of water Source: IPCC, 2001

25. Sea ice trends

26. Sea ice will continue to decline dramatically

27. Key findings: Cold nights and days are decreasing, warm nights and days increasing Decreases in cold nights, increases in warm nights are much greater than corresponding changes during daytime Consistent with warming caused by enhanced greenhouse effect

28. Predicted effects of global warming Drier conditions reduce grain harvest. Reduced rainfall in rainforests as a result of deforestation Flooding due to rising sea levels Damage to habitats due to changes in the ecosystem Changes in water supply – water shortages and contamination Spreading of tropical diseases - directly related to global warming Increased air pollution

29. Stunted coral growth as a result of the doubling of atmospheric CO 2 . According to researchers from Chapel Hill University (North Carolina) the coral reef is disappearing at an alarming rate and it seems it can’t be stopped.

30. Changing ecosystem Global warming is causing a change in habitat requiring species to adapt and change!

31. Science, December 3, 2004 Vol. 306, Issue 5702,1686 Is Global Warming A Valid Concern? Number disagreeing with the global consensus that greenhouse gas pollution has caused most of the warming of the last 50 years: Number of scientific studies dealing with “climate change” published in scientific journals between 1993 and 2003:

32. What Can WE Do?

33. Every Individual Can Make a Difference

34. We Need Leadership!

35. We Need: Leaders P olitical… Credit: John Decker Nevada Senator Harry Reid Senate Majority Leader Representative Shelley Berkley Representative Dina Titus Senator John Ensign Representative Dean Heller

36. Pass Federal Legislation Monitor Your Elected Officials Records on Environmental Concerns

37. What Do We Need for Federal Legislation! We need our elected leaders to pass strong, comprehensive legislation regarding energy and global warming . Increased Fuel Efficiency Standards Energy Standards for Buildings Emissions Standards Renewable Electricity Standards

38. We Want: Emissions Reduction 80% total reduction below 1990 levels by 2050

39. Limits emissions from a designated group of polluters, such as power plants. Sets the limit (cap) for greenhouse gas pollution. Polluters that exceed the cap need to reduce pollution. Polluters that fall below the cap can sell pollution credits to other users. Cap is lowered over time We want to set emission standards!

40. How Can I Help With Federal Legislation? Write letters to your elected officials Write letters to the editor of your local newspaper or television station Start or participate in a global warming blog Educate your peers

41. Is Federal Legislation the Only Answer? NO! Individuals, Businesses, and Communities can all work together to reduce emissions immediately.

42. You can Take Action at Home. Buy a hybrid or alternative fuel vehicle Replace windows Install solar or geothermal power Vacation closer to home

43. More Action At Home The Easy Stuff... Change your Thermostat Stop Water Leaks Fix Weather Stripping and Caulking Replace Incandescent Bulbs

44. And a little more effort…. Buy ENERGY STAR appliances Dry clothes on a line III. Reduce outside irrigation

45. Take Action: Reduce, Reuse, Recycle Reducing half your household waste = 2,400 lbs CO2 per year

46. Take Action In Your Community Work with others in your area to: Help schools, businesses, and local governments cut their energy use. Encourage local, state and federal government to protect open spaces, farmland, and forests The Las Vegas Strip will soon be going dark, and the reason is to help Mother Nature. In just two months, Las Vegas will participate in a global movement known as "Earth Hour," all in an effort to raise awareness regarding climate change and global warming.

47. Educate Others to Take Action

48. What Do We Gain by Participating in Global Warming Activities? Energy independence - Freedom from fossil fuels and pollution Cleaner, Better air and water quality Clean energy/technology jobs More forests, farmland, wetlands, wildlife

49. Take Action and Vote Inform your elected representatives how important global warming solutions are to you.

50. The Most Important Crossroads Of Our Lives…

51. Credits http://www.ecobridge.org/content/g_evd.htm Turning up the heat on the future: Global Warming and its Consequences. Dr. John Heinrichs. Department of Geoscience. www.audobon.org Chemistry in Context. Applying Chemistry to Society http://www.lvwash.org/html/ http://reid.senate.gov/ http://ensign.senate.gov/public/ http://berkley.house.gov/ http://heller.house.gov/ http://titus.house.gov http://www.livescience.com/environment/050621_warming_ changes.html http://www.sierraclub.org/energy/habitat/