Evidence+of+Human+involvement

__Humans Impact on Global Warming__ By Ben Houle

The Big question... Are humans really at fault for the warming of the Earth? According to Al Gore, humans are completely at fault, and the Earth is doomed. In reality, humans do have some part in the warming of the earth. The burning of fossil fuels, clear cutting, and many many other human activities contribute to this problem. Below is a graph representing how green house gases have increased over a 120 year period.



If you can see in the graph, the amount of green house gases has significantly increased over the past 120 years. This can be said, to be from humans ever increasing reliance or dependence on green house gas emmiting fossil fuels. The question is not a simple one to answer. Is the rising global temperature our fault? This graph proves that indeed the green house gas levels are increasing, but whose to say its from us and not just a natural cycle.

In a New York Times article, they stated this "On Feb. 2, 2007, the United Nations scientific panel studying climate change declared that the evidence of a warming trend is "unequivocal," and that human activity has "very likely" been the driving force in that change over the last 50 years. The last report by the group, the Intergovernmental Panel on Climate Change, in 2001, had found that humanity had "likely" played a role." (NYT) Scientists who have access to every scientific tool known to man still can't agree on whether or not for sure we affect the warming of the globe.

My conclusion is that if even the most decorated scientists cannot determine whose at fault, then it shouldn't matter. We should stop pointing fingers and put our focus into efforts to reverse the process, and prepare our society so that future generations wont be tainted by our mistakes.

Sources: -http://www.ucsusa.org/global_warming/science_and_impacts/science/global-warming-human.html -http://topics.nytimes.com/topics/news/science/topics/globalwarming/index.html -http://www.cnn.com/2007/TECH/science/02/02/climate.change.report/