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Humans cause climate changing

First, as Con have said, "in the Mesozoic era the climate was much hotter and dryer". It is true, but the important thing is that it was 248 million years ago. The climate had been changing slowly during millions of years, before the industry. While, after people invented factories, vehicles and different weapons, such as nuclear weapons, Atom Bomb, rockets and etc. the climate have been changing quickly and humans caused it. For example, when rockets launches, Atom Bomb and nuclear weapons are used, irreparable damage to the climate is caused immediately. Humans even change the weather as they wish. For example, China attacked to the bank of cloud to transform clear blue skies for the National Day parade. It happens in other countries, too. They try to change weather and get the desire result. But it has consequences, as on the next days there happened a storm. These examples, show that humans changed the weather, as they desire and damaged to the climate a lot. Second, it is true that "humans are not the only things emitting greenhouse gases", while humans cause the biggest amount of gases. As the Intergovernmental Panel on Climate Change, a group of 1,300 independent scientific experts from countries all over the world claimed: "The industrial activities that our modern civilization depends upon have raised atmospheric carbon dioxide levels from 280 parts per million to 379 parts per million in the last 150 years. The panel also concluded there's a better than 90 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in Earth's temperatures over the past 50 years." It proves that humans cause climate changing and they influences to it quickly than it can be naturally. To conclude, humans are the main creature that caused a big problems in climate changing and damage it during a short period of time. http://climate.nasa.gov... http://www.guardian.co.uk...