She mentions that the Intergovernmental Panel on Climate Change, in its 2013 AR5 report, reiterates that since the 1950’s, the atmosphere and ocean have warmed up significantly, the amount of snow and ice has been reduced, sea levels have risen, and the concentrations of greenhouse gases have increased. Throughout the years, these numbers have only increased. It is very likely that the global mean temperatures will increase anywhere from less than 1 degree Celsius to more than 5-degree Celsius. However, there have been reports issued that aim to prevent a 4-degree Celsius world at all costs. Nagel, further, argues that a 4-degree world could present great challenges to humanity, such as heat waves, severe droughts, and major floods in many regions. If we were to achieve a 4-degree world, it would leave major impacts on ecosystems, land, and the people. She states that in the future, the burden of climate change will be borne differently by people in regions that are already highly vulnerable to global warming and