Level 2 - Details on Climate Change

• 1. Has the climate changed during the 20th century?
  • 1.1 Has the world warmed?
  • 1.2 What other climate changes have been observed?
  • 1.3 What aspects of our climate have NOT changed?
• 2. What causes this climate change?
  • 2.1 Are human activities modifying the atmosphere?
  • 2.2 How well is climate change understood?
  • 2.3 To what extent is climate change due to human activities?
• 3. What climate changes are expected for the future?
  • 3.1 What emission scenarios are projected?
  • 3.2 What climate changes are projected for the 21^st century?
  • 3.3 What climate changes are projected for future centuries?
• 4. What are the likely consequences of climate change?
  • 4.1 Has climate change already started to affect us?
  • 4.2 How potentially could climate change affect us?
  • 4.3 What other major impacts could climate change possibly have?
  • 4.4 What should be done?
• 5. How could Climate Change affect us in the future?
  • 5.1 What would be the effects on and vulnerability of the natural systems?
  • 5.2 What would be the effects on and vulnerability of the human systems?
  • 5.3 How does climate change vulnerability vary across regions?
• 6. How could greenhouse gas emissions be reduced?
  • 6.1 How is Climate Change a unique problem?
  • 6.2 What are the options for reducing greenhouse gas emissions?
  • 6.3 What would be the costs of implementing the Kyoto Protocol?
  • 6.4 What are the ways and means for mitigation?
  • 6.5 What in the current knowledge needs to be improved?
• 7. Are recent extreme weather events due to global warming?
  • 7.1 What extreme events could global warming explain?
  • 7.2 Is the occurrence of extreme temperatures increasing?
  • 7.3 Are precipitation levels changing?
  • 7.4 Are storms affected by global warming?
• 8. Do man-made greenhouse gases matter compared to water vapor?
  • 8.1 How do gases affect the earth's temperature?
  • 8.2 What is the human contribution?
  • 8.3 How could water vapor amplify global warming?
  • 8.4 What is the role of clouds?
• 9. Can ecosystems adapt to Climate Change?
  • 9.1 Are ecosystems less adaptable now to Climate Change?
  • 9.2 Is the speed of Climate Change detrimental to ecosystems?
  • 9.3 Has man affected the adaptability of ecosystem?
  • 9.4 Which ecosystems would be the most affected?
• 10. Conclusion (only in level 1)