Bibliography

Larry  West. About News. What causes global warning.

Retrieved from http://environment.about.com/od/faqglobalwarming/f/globalwarming.htm

The article is answering the question What causes global warning?. The author is supporting his thoughts by using information scientifically proven. The information collected by the author supports the idea that the humans are producing greenhouse gases, that are produced naturally by the world to keep the earth hot, but humans are producing excessive greenhouse gases that are causing that the earths is getting more hot than normal. This article is useful to understand the principal causes of global warning.

IPPC. Effects of  global warming.(2007) National Geographic

Retrieved from http://environment.nationalgeographic.com/environment/global-warming/gw-effects/

The article, written by a member of National Geographic, is expressing what are the effects in the world of global warming. Besides the temperatures levels are going up all around the world, the consequences in a long period will be changes in the ecosystems, less drinkable water, the levels of the sea will raise, in others. This article is useful to have an idea and a scientific support to write my article  about the global warming as the main environmental problem facing us today.

John Hawkins. Feb 18, 2014. 5 reasons that global warming isn`t happening.

Retrieved from http://townhall.com/columnists/johnhawkins/2014/02/18/5-scientific-reasons-that-global-warming-isnt-happening-n1796423/page/full

This article, written by John Hawkins, is clearly against that the global warming is happening now a days. The article is destroying this motion giving five scientifically proven arguments, like that there hash`t been a global warming since 1997, there is no scientific consensus that global warming is occurring or that is doused by men activity or that predictions about the impact of global warming have already been proven wrong. This article helps to have know the point of view against the issue.  

Charlotte Meredith. Express. 100 reasons why climate change is natural

Retrieved from http://www.express.co.uk/news/uk/146138/100-reasons-why-climate-change-is-natural

In this article, the author is giving 100 reasons to convince the readers, that global warming is a natural process, that the earth is passing trough a period of warming. The author gives many reasons, to name one of them he says that the investigations that said that global warming is a cause of human activity is hasn't been scientifically proven. This research can help me to have some arguments against my point of view to have a more complete essay.