In this chapter, the focus is on dealing with climate change to support sustainable development. The researchers dig into the beliefs behind the climate rules, especially the Kyoto Protocol. They look closely at how international emissions trading works, following the rules set up in Marrakesh and agreed upon in Montreal in 2005. These rules define how emissions trading should work, including fairness, transferability, and protecting the environment. By using tools like joint implementation (JI) and the clean development mechanism (CDM), new technologies can be spread around, bringing money and technology to places that need upgrades. This helps cut emissions, plus it leads to positive results across the global economy.