The global warming skeptics who cite a recent downward trend in global temperatures since 2002 may very well be pointing to evidence that global warming is already at work. Human activity may very well be speeding up a natural cycle that would usually take several centuries to evolve. If we melt our glaciers quicker than they would normally in natural cycles, and we release enormous amounts of cool freshwater into the ocean conveyor belt, then global temperatures will plummet faster than natural systems can adapt. By adding more CO2 into the atmosphere, we are speeding up a cycle that has shown its consistency over the past 2 million years. (CO2 is a greenhouse gas; greenhouse gases trap heat) Global warming deniers who simply state that the earth is cooling as their sole data for denial do not realize that they are making the case for global warming. After warming and melting ice that is frozen on land, earth's temperature drops because the warm ocean currents that regulate our temperatures are disrupted. The idea that global warming can cause global cooling in the long run should make us think about whether both sides of this debate are making the same case. Is global warming causing global cooling?