The Earth's climate has changed over different periods of time, and it is changing now. However, the current change is being accelerated by human activities, like burning fossil fuels. The Earth is warming at an alarming rate, and almost all scientists agree that we are responsible for it. There is disagreement about the degree to which we are responsible, but it's almost unanimous that we are one of the main causes of climate change.
There is a substantial amount of evidence that shows that not only are humans repsonsible for climate change, but they have been responsible for some time. Not only do CFC's and industrial manfacturing contribute, but there is evidnece that cutting down trees, particularly clear cutting have greatly contributed to climate change.
Humans are responsible for pollution and the destruction of the planet that has led to climate change. Due to the pollutants in the atmosphere coming from factories and cars, the direct impact has been felt in the atmosphere. The warming of the oceans and the melting of the polar ice caps are all attributed to the human factors.
People have varying opinions about who controls the climate. Some people have a long-winded technical explanation for the climate change. Other people believe the earth just does its own thing. Then there are the few of us who believe that a higher power controls all that goes on in the creation. We feel that neither a climate change nor a natural disaster is an accident.