Climate Change or Global Warming is the effect of the emission of many greenhouse gases into the Earth's Ozone Layer, causing its depletion. This results in harmful Ultraviolet rays from the sun crossing into the Earth. This may seem that one hole on the Ozone Layer may affect only one place on the globe, but the aftermath is much, much worse.
A hole in the ozone layer had been spotted in Antarctica. Successful Methods have closed it, but what would happen, would have been bad. If Antarctica was exposed to massive amounts of heat, it would melt down. This would result in rising sea levels and tsunamis, thus leaving the Earth in disaster.