Global Warming

1
Global Warming

• Bill Scroggins
• College of the Sequoias
• October 25, 2006

2
Global Warming is a FACT

• Mean global temperature has increased over 1F
  in the last century

3
Global Warming is a FACT

• Mean sea levels have increased 10 to 25
  centimeters in the last century

4
Global Warming is a FACT

• Even bathing suits prove the point!

5
What CAUSES Global Warming?

• FACT Carbon Dioxide levels have risen
• THEORY CO2 causes global warming through the
  Greenhouse Effect

6
Greenhouse Gases trap heat in the Earths
atmosphere
7
Sources of Greenhouse Gases
8
Bad Things COULD Happen

• Lowland flooding due to sea levels rising

These scenarios are from the UN sponsored report
by the Intergovernmental Panel on Climate Change
(IPCC) predicting sea level rises of between 13
and 94 cm
9
Bad Things COULD Happen

• Continuing global temperature increases.
  Projections from the IPCC vary from 1C to 5C
  over the next century.

10
But WILL Bad Things Happen?

• Studies show that there is not enough oil and
  gas on Earth to produce the CO2 levels necessary
  for the worst-case IPCC scenario

11
CAN We Reduce CO2 Emissions?

• MOST CO2 comes from producing energy

12
Very Little Comes from Agriculture
13
CAN We Reduce CO2 Emissions?

• Our hunger for fossil fuels is insatiable

14
Should We Deny It and Curse the Sky?
15
Or Depend on New Technology?
16
There ARE Practical Solutions

• Protect forests
• Enhance carbon sinks (ocean, soils)
• Reduce fossil fuels
• Increase alternate energy sources

17
And Dont Over React