As the 21st century progresses, the problem of global warming becomes more and more pressing on our planet. In this regard, the proposed thesis sets itself the initial objective of highlighting this phenomenon to the reader, probing the numbers, the relations between temperature and climate-changing gas emissions (GHG) and the effects of humanity, which prompted the concentration of CO2 in the air over 400 ppm. Subsequently, the concept of problem mitigation is proposed to the reader, analyzing different aspects such as the carbon lock-in, the policies currently in place to limit the temperature increase beyond 2°C, and the possible solutions. In particular, one of the possible solutions is investigated, namely the capture of CO2 - the most present greenhouse gas in the environment.