Blame Canada, because melting arctic soil could soon release massive amounts of carbon into the Earth’s atmosphere. If this occurs, the Earth could be temporarily bombarded with Greenhouse gases that would super heat our atmosphere. The problem with this is that it will be horribly bad for the environment, and there doesn’t seem to be anything we can do to stop it. Scientific modelling suggests that this is probably not the first time this type of event has occurred in our planet’s history, but it would be the first time in modern history. It has been tens of thousands of years since the last temperate climate existed on Earth, prior to the modern era.
Scientists suggest that the Earth goes through regular heating and cooling cycles that may occur on a roughly 13,000 year cycle. Right now we would conceivably be nearing the peak of one of these cycles and looking for a lot more change up ahead.