Gasses in the atmosphere, such as carbon dioxide and methane, that trap heat from the sun, contributing to the greenhouse effect and global warming.

A fund established under the EU ETS to support investments in modernizing energy systems and improving energy efficiency, particularly in lower-income EU member states. It uses funds from the sale of EUAs through auctions.

Indirect greenhouse gas emissions that occur as a result of an organization's activities but are not directly owned or controlled by it, including emissions from its supply chain, transportation, and use of products.