Global warming has increased the earth's temperature by 1 degree F over the past 100 years. While the causes are debated, many scientists believe human activities like burning fossil fuels are contributing to increased greenhouse gases and trapping more heat in the atmosphere. The consequences of continued global warming could include rising sea levels from melting ice caps that displace coastal populations, more frequent extreme weather, and potential mass species extinction by 2050. Reducing industrial greenhouse gas emissions is necessary to curb further global warming impacts.

1. GLOBAL WARMING

2. Global Warming
What is it?
Earth has warmed by about 1 º F over the past
100 years. But why? And How?
Scientists are not exactly sure.
The earth could be getting warm on it’s own.

3. However ….
• Many of the world’s leading climate scientists
think that things people do are helping to
make the Earth warmer.
• Scientists are sure about the greenhouse
effect. They know that greenhouse gases
make the earth warmer by trapping energy in
the atmosphere.

5. The Greenhouse Effect

6. What is a GREENHOUSE ?
• Greenhouses are special buildings
usually made from glass & steel. They
are used to grow plants which need
humidity, tropical temperature &
constantg rowing condition.
• In a glass greenhouse heat builds up &
gets trapped due to presence of CO2.
It offers plants a warm and humid
environment, even if the outside
weather is dry , windy or cold.

8. Evidence that CO2 is Cause
carbon dioxide vs. global temperature graph

9. Who is responsible?

10.  Most scientists blame
industrialization:
 Automotive Industry (low fuel
economy)
 Oil companies (fossil fuels)

11.  Power plants (coal)
 Agri-business (biofuels,
deforestation, cattle
producing methane)
 Logging Industry (deforestation)

14. Air Quality
An increase in the concentration of
ground-level ozone
Damage lung tissue
Harmful for those with asthma and
other chronic lung diseases

15. Food supply
Rising temperatures and variable precipitation
Decrease the production of staple foods in
many of the poorest regions
Increasing risks of malnutrition

16. UV Exposure (Australia)
• Skin Cancer
– an abnormal growth of skin tissues.
• Premature aging
– make the skin thick, wrinkled, and leathery
• Cataracts
– No longer have transparent lenses in their eyes

17. UV Exposure (Australia)
• Other Eye Damages
– Skin cancer around the eyes
– Degeneration of the yellow spot
• Suppression of Immunity
– Overexposure to UV radiation  suppress proper
functioning of the body's immune system and natural
defenses of skin
– UV-B radiation weakens the immune system  increases
the chance of infection and disease

18. Population displacement
Rising sea levels
Increase the risk of coastal flooding
(Necessitate population displacement)
• More than half of the world's population now lives within
60km of the sea.
• Most vulnerable regions: Nile delta in Egypt, the Ganges-
Brahmaputra delta in Bangladesh, many small islands, such as
the Maldives, the Marshall Islands and Tuvalu.

19. Industrialization is the
primary cause of
global warming.

20. Are alternative sources of
energy the answer?

21. The Kyoto Protocol –
effective or not?

23. Industries should
cut greenhouse gas
emissions now.

25. Consequences of
global warming

26. Melting polar icecaps will raise ocean
levels; the Arctic Ocean could be ice free
in summer by 2050.

27. Global sea levels could rise by more
than 20 feet, devastating coastal
areas worldwide.

28. Heat waves, droughts, and wildfires
will be more frequent.

29. Catastrophic weather such as hurricanes will
increase.

30. More than a million species
worldwide could be extinct by
2050.

31. Endangered

35. Is unlimited economic
growth really
desirable?

36. Industrial growth
should be slowed or
limited in order to
curb global warming.

37. Do newly-developed
economies, like India and
China, have a right to
increase their industrial
emissions?

38. The Earth is getting warmer.
What causes the warming is hotly
debated.

39. The Argument:
Human causes
(Anthropogenic):
Carbon dioxide (CO2)
exhaust from cars and
power plants.
Methane gas from waste
Deforestation

40. The Argument:
Natural causes: Some claim the sun is
getting hotter. Also,
the earth goes
through natural
cycles of climate
change.

41. 1973 CONFLICTING INFORMATION 2005

42. Is it already
too late?