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Human activities are considered one of the main causes of global warming. Several human activities increase the emission of certain greenhouse gases into the atmosphere. When fossil fuels such as oils, natural gas, and coal, in addition to wood, wood products, and solid waste are burned they emit Carbon Dioxide. In 2002 about 40% of U.S. carbon dioxide emissions stem from the burning of fossil fuels for the purpose of electricity generation. Also, The UN's Intergovernmental Panel on Climate Change estimates that aviation causes 3.5 percent of global warming, and that the figure could rise to 15 percent by 2050. While carbon dioxide is the principal greenhouse gas, methane is second most important. According to the IPCC, Methane is more than 20 times as effective as CO2 at trapping heat in the atmosphere. Besides greenhouse gases, forest destruction and population are two other causes of global warming. Advances in technology have increased the human population thus resulting in damaging Earth’s resources. So, what can we conclude? I believe it is safe to say that:Global warming appears to have been occurring for the last 30-50 years.This warming may only be a short-term fluctuation but could be a longer-term trend.Evidence is still inconclusive whether man is causing the warming. No "natural" causes for global warming have been confirmed. One possible new theory is that galactic cosmic radiation (GCR) modulated by solar activity affects low-level cloud cover and is causing the warming. Global warming may affect some parts of our society negatively but would likely benefit others.
The predicted effects of global warming not only impact the environment, but human life as well. The most popular effect of global warming is its’ impact on glaciers.The complete melting of these glaciers would result in a major flow for several decades, however after that the most populated areas in the world could potentially run out of water. Global warming will in turn...