Global warming is a very controversial topic. In my opinion, we are to blame, or at least we are speeding up the process. It has been proven that on Earth, temperatures have been known to rise and fall. This is why we have ice ages, then hot climates. We are caught in an inter-glacial period so naturally, because these events can be thought of as cyclic, the Earth will become hotter like it has been doing. The reason for this, I’m not sure but this has been an ongoing process and will continue. However, we are still at fault because we are, in theory, speeding up the process. The amounts of fossil fuels we have been burning are increasing and it is possible that by the fossil fuels we are burning are making the Earth hotter. This is due to the greenhouse effect and in brief explanation, the heat radiated from the emissions do not escape from the atmosphere and it stays locked in the Earth, therefor making the Earth hotter. So, although most of the scientists will say either that global warming is either cyclic, or entirely our fault, I think that the events are cyclic, but we are speeding it up.