Global warming is caused by greenhouse gases like carbon dioxide and methane that are released into the atmosphere by human activities such as burning fossil fuels. These gases trap heat in the lower atmosphere and have increased the Earth's temperature, causing sea levels to rise and severe effects like declining animal populations and more extreme weather. While greenhouse gases make up only 1% of the atmosphere, they are the major cause of global warming. Reducing carbon dioxide emissions through increased use of renewable energy and more efficient use of resources is crucial to addressing this problem. Individual actions like reducing energy usage and recycling can also help solve the issue.

1. Global
Warming

2. What is Global Warming?

3. How Global Warming Works
Carbon Dioxide (CO2)
Fossil fuels (coal, oil, natural gas)

4. Earth’s Atmospheric Gases
Nitrogen (N2)
Oxygen (O2)
NonGreenhouse
Gases
99%
Water (H2O)
Carbon Dioxide (CO2)
Methane (CH4)
Greenhouse
Gases
1%

5. Greenhouse
Gases
The gases responsible for the
greenhouse effect are
 CH4
 NO2
 H2O
And many more.
These gases are the major
cause of Global Warming

6. Working of Greenhouse Gases

7. Source of Greenhouse Gases
Pollution from coal,
natural gas, and oil

8. Consequences of Global
Warming
Rising Sea Level
Habitat Damage and
Species Affected
Increased Temperature
Changes in Water Supply

9. The severity of
Global Warming
on the Earth
Global warming has very severe
effects on the Earth like
•
Ice is melting worldwide,
especially at the Earth’s poles.
This includes mountain glaciers,
ice sheets covering West
Antarctica and Greenland, and
Arctic sea ice.
•
Researcher Bill Fraser has
tracked the decline of the
Adélie penguins on Antarctica,
where their numbers have fallen
from 32,000 breeding pairs to
11,000 in 30 years.
•
Sea level rise became faster
over the last century.
•
Some butterflies, foxes, and
alpine plants have moved
farther north or to higher, cooler
areas.
•
Precipitation (rain and snowfall)
has increased across the globe,
on average.

10. Portage Glacier

Alaska
1914
Photos: NOAA Photo Collection and Gary Braasch – WorldViewOfGlobalWarming.org
2004

11. Colorado River

Arizona
June 2002
Dec 2003

12. Global
Warming:
Shifting Gears

13. Billions of Metric Tons Carbon
Goal:
Reductions in
2007
CO2 Per Year

14. Billions of Metric Tons Carbon
Gigaton Carbon
Our Goal
2007
Reductions
in CO2
Per Year
Produce electricity
efficiently
Use electricity
efficiently
Vehicle efficiency
Solar and Wind
Power
Biofuels
Carbon capture
and storage

15.  The
Planet is in serious trouble

17. What can you do to help solve
the problem?

18. What should we do…
Nothing
Something
Everything

19. What’s being done now to
reduce our emissions?
Wind Power
Solar Power
Fuel-Efficiency

20. Simple Things You Can Do
Turn off your computer or the TV
when you’re not using it.
Take shorter showers. Heating water uses energy.
Keep rooms cool by closing the blinds, shades,
or curtains.
Turn off the lights when you leave a room.
Use compact fluorescent bulbs.

21. Simple Things You Can Do
Dress lightly when it’s hot instead of turning
up the air conditioning. Or use a fan.
Dress warmly when it’s cold instead of
Turning up the heat.
Offer to help your parents keep the air filters
on
your AC and furnace clean.
Walk short distances instead of asking for a
ride in the car.
Recycle.
Plant a tree.

22. Despair?
You may never know what results
come of your action,
but if you do nothing,
there will be no result.

23. Question Answers
Session