Transcript Global Warming

Global Warming
Climate Change
The Question
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The question is NOT whether the
average global temperature is going
up.
The question is whether or not this
increase in temperature is due to
human activity or if it is a natural
cycle.
GLOBAL WARMING DUE TO
HUMAN ACTIVITY
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Many scientists say there is a
relationship between CO2 and
temperature.
GLOBAL WARMING DUE TO
HUMAN ACTIVITY
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"Global warming is a proven fact and is mostly
caused by emissions from cars and industrial
facilities such as power plants and factories."
– Intergovernmental Panel on Climate Change
According to this summary, the IPCC finds that
human actions are "very likely" the cause of
global warming, meaning a 90% or greater
probability.
Since 2007, no scientific body of national or
international standing has disagreed about the
human impact of global warming. A few
organizations hold non-committal positions.
GLOBAL WARMING DUE TO
NATURAL CYCLES
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The science in proving global warming is caused
by humans has too many variables.
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The warming could be caused by solar activity.
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Arctic ice caps grew from 2007-2008.
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Water vapor is the only significant greenhouse
gas (CO2 is “insignificant” in regards to
greenhouse gases).
CO2 has been increasing for the last 18,000 years
(long before the industrial revolution).
Confused?
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So is everybody else. That is why
this topic is heavily debated.