EU ETS revenues from the aviation sector could increase tenfold in the next 15 years if emissions from international flights and greenhouse gases other than CO2 were included in the market, according to analysis released on Monday.

Road (not) to Belem? – Diplomats from 25 countries have suggested that Brazil hold COP30, either entirely or partially, in another city if the issue of exorbitant prices in Belem is not resolved soon. Less developed countries, the African Group of Negotiators, as well as nations such as Canada, Finland, and Switzerland, signed the document, Folha de S.Paulo reported. The group requested that the Brazilian government ensure minimum acceptable price conditions for participants. The Extraordinary Secretary for COP30, representing the Brazilian government, told Folha that there is no possibility the climate conference will be held anywhere other than Belem. In an interview with local outlet G1, Andre Correa do Lago, president of COP30, stated that there is a sense of revolt with the high costs, particularly among developing countries, which are pressuring Brazil. While accommodation prices at previous COPs typically doubled or tripled, in Belem, prices have risen by as much as 15 times, according to the ambassador.

A US appeals court on Friday upheld a Biden administration rule that limits the use hydrofluorocarbons (HFCs), rejecting arguments from chemical industry stakeholders that the Environmental Protection Agency (EPA) overstepped its authority.

Malaysia will introduce a National Carbon Market Policy and launch an emissions trading scheme (ETS) as part of its 13th Malaysia Plan (13MP), Prime Minister Anwar Ibrahim confirmed this week, in a move towards formalising the country’s carbon market infrastructure.

European companies may have offset emissions using carbon credits from projects potentially operating wrongfully, a media organisation reported this week.

The African Union Development Agency (AUDA‑NEPAD) has launched a continent-wide initiative to enhance carbon market governance, introducing new integrity and equity principles, a regional coordination mechanism, and a digital platform to support readiness under Article 6 of the Paris Agreement.

Shell connection - The firm appointed to run media for COP 30 also works for oil giant Shell, Climate Home News reported. UN awarded Edelman, which is also the world's largest PR firm, an $835,000 contract to handle global media outreach, produce digital content, and manage any communications crises during the November summit. The investigation found that the same executive overseeing the firm’s work with Shell in Brazil - where the energy company is ramping up oil and gas output - will also work on the COP30 contract.