The Paris Agreement marked a turning point in the fight against global warming. It commits all the signing countries to reduce their greenhouse gas emissions and keep average global warming below two degrees compared to the pre-industrial era. To achieve this goal, the Intergovernmental Panel on Climate Change (IPCC) recently restated that net anthropogenic emissions of CO2 must be significantly reduced from their current level. The goal is clear: the world must not exceed the remaining carbon budget. This global goal has resulted in the definition of carbon neutrality targets that have since been adopted by the European Union (by 2050) and many countries such as China (by 2060), the United States (by 2050), and the United Kingdom (by 2050).