What proof does Al Gore provide to support his theories on global warming?

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In An Inconvenient Truth, Al Gore looks at the societal and environmental impacts of global warming. He states correctly that Earth's carbon dioxide levels are increasing, but he is incorrect when he states the atmosphere is getting thicker—the correct way to state this would be that carbon dioxide emissions...

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In An Inconvenient Truth, Al Gore looks at the societal and environmental impacts of global warming. He states correctly that Earth's carbon dioxide levels are increasing, but he is incorrect when he states the atmosphere is getting thicker—the correct way to state this would be that carbon dioxide emissions are causing more of the sun's rays to stay close to the Earth. Gore also uses glacial melting as evidence, most notably the loss of the glaciers on Mount Kilimanjaro. To give Western viewers more of a sense of urgency, he then shows graphics of what a twenty-foot rise in sea level would do to New York City and Florida. Gore's An Inconvenient Truth premiered very close to the time of Hurricane Katrina, so he also used extreme weather as evidence of global warming. Gore also uses coral loss and more severe insect infestations and tropical diseases as evidence the Earth is getting warmer.

Some of Gore's proof is debatable—some scientists claim Kilimanjaro is losing glaciers due to the air becoming drier, not hotter. Still, Gore's work on climate change made the issue mainstream and opened up the debate on the subject.  

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Al Gore is the 45th vice-president of the United States of America.  He is also the voice behind the movie "An Inconvenient Truth", which outlines the causes and concerns of global warming.  His main point is weather phenomena are becoming more extreme and damaging in nature, largely due to increased global warming.  Global warming is an increase in world temperatures by world production of greenhouse gases, which tend to hold in radiant energy from the sun. 

The recent typhoon that hit the Phillipines is a recent example of Gore's promotion of global warming.  In 2014, the Phillipines were inundated with a typhoon that decimated the islands, resulting in catastrophic property damage and over four million refugees from the result of the storm.  The Phillipines historically experience the results of typhoon damage, but according to Gore, this type of increased storm strength is on the rise.

The events that led to hurricane Katrina's impact on the Gulf Coast of the United States in 2005 is another piece of evidence used by Gore to point out the increased severity of these storms.  The city of New Orleans was flooded as a result of levee failure when the massive storm pushed inward.  Many of the city's poorer, low-lying areas experienced flooding to the rooftops.  Families were separated, relocated to surrounding states as hurricane refugees.

Any of the natural disaster-related weather events are used as fuel for Gore's claims that global warming is the the overriding contributor.  In Gore's estimation, unless greenhouse gas emissions are cut back, weather escalated casualties will continue to rise.

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