And this is a very grim outlook, as only in the last 500 years we have caused 322 animal extinctions, with two-thirds of those occurring in the last two centuries. This is a staggering figure, since, on average only 2 out of every 10,000 mammal species go extinct every century. Combining this with the knowledge that 35 of 5,513 known mammal species have gone extinct since 1900, we can calculate that mammal species have gone extinct at the rate of 28 faster than it should have. If one factors in the numbers of animals extinct in nature, vertebrates (such as birds, reptiles, amphibians and fish), one finds that the extinction rate of the 20th century is 53 times higher than the baseline extinction rate. But the numbers I have given is only in a smaller scale that allows people better to understand the dire situation we are, in fact some scientists estimate that we are losing species at 1,000 to 10,000 times the average rate (The Center for Biological Diversity: THE EXTINCTION CRISIS). And these numbers aren’t simply statistics found by a few fringe scientists, to quote a research paper on the consensus of human caused global warming, "Among abstracts that expressed a position on AGW, …show more content…
And while it is true that planets go through global temperature fluctuations, and the temperature fluctuations are well documented (National Centers for Environmental Information: Paleoclimatology), there is also research that proves the current rate of temperature change is much faster, about 10 faster, “As the Earth moved out of ice ages over the past million years, the global temperature rose a total of 4 to 7 degrees Celsius over about 5,000 years. In the past century alone, the temperature has climbed 0.7 degrees Celsius, roughly ten times faster than the average rate of ice-age-recovery warming.” (Nasa: How is Today’s Warming Different from the Past?). Some also claim that we do not have enough data to back up any concrete argument towards, but I certain that if we have enough data to predict climates going back to 100 million years (National Centers for Environmental Information: Paleoclimatology Datasets), we have enough data to be confident of unnatural temperature fluctuations on our