Billy Joel once said, “we didn’t start the fire”. He is right; global warming is a natural cause. The Earth was heating long before humans were emitting large amounts of greenhouse gases and even before humans were on planet Earth. Since humans were not alive during the period after the ice age (known as the post-ice age era), then the heating of the Earth to melt the ice does not put humans at fault. Global warming is naturally caused by natural emission of greenhouse gases, Earth’s heating and cooling system, and other planets heating without human life on them. The Earth has its own greenhouse gas emission cycle, releasing billions of tons of methane gas and carbon dioxide a year. MIT students researched and recorded that the methane levels in the atmosphere have increased more than in the past ten years. Casey Kazan wrote an article about the MIT scientists’ study and said “ Since all worldwide levels rose simultaneously throughout the same year, however, it is probable that this may be part of a natural cycle - and not the direct result of man's contributions.” (Kazan, 2009). With the increase of methane levels, MIT scientists have also concluded that methane accounts for only ⅕ of the Earth’s atmosphere, but its effect on the Earth is
twenty five times greater than the effect of carbon dioxide on the Earth. So if methane gas levels have risen naturally, then the effect that the gases would have on Earth would be greater than any release of carbon dioxide by humans. For millions of years, Earth has had its own heating and cooling system. Scientists have concurred that approximately every 1600 years, the Earth will either heat up or cool down. The ice age occurred approximately 20,000 years ago; thousands and thousands of year prior to human existence. Even when humans started to develop and become the top predator in the world, they were still not emitting greenhouse gases like humans do today. As the ice age started to end, glaciers and ice caps shifted...
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