Global warming is caused by greenhouse gases trapping heat in the atmosphere. This global warming leads to climate change through changes in weather patterns and seasonal shifts. Some consequences of climate change include melting glaciers/rising sea levels and impacts on wildlife and the economy through more extreme weather. While some scientists argue global warming is a natural phenomenon, others believe humans contribute through activities that increase greenhouse gas emissions like burning fossil fuels. The authors disagree on the extent of human influence, with one arguing it is natural and the other a combination of natural and human factors.