Global Warming

I believe that global warming is real because there have been lots of changes in the world regarding multiple versions of climate change. Here are some links to further explain my reasoning:

http://www.conserve-energy-future.com/is-global-warming-real.php

http://www.debate.org/opinions/do-you-believe-in-global-warming

http://www.nytimes.com/2014/06/02/upshot/is-global-warming-real-most-in-US-believe-in-climate-change.html?_r=0