The EU ETS in plain English
The EU Emissions Trading System is the world's largest carbon market — and the carbon-price benchmark for everyone else. Here's how it works, who's in it, and what the pr
Read →Policy & regulation
The carbon regulation landscape, in 2026
The regulatory frame around carbon has tightened sharply since 2023. EU CBAM is live, CSRD reporting is hitting balance sheets, and CORSIA is testing whether aviation can pay for its own emissions. Here is the policy map.
Article 6 of the Paris Agreement — explained
Article 6 is the part of the Paris Agreement that lets countries trade carbon reductions. It is also the most contested 14 paragraphs in international climate law.
Read →CORSIA — aviation's carbon-offset programme
CORSIA is meant to cap international aviation emissions at 2019 levels. Whether it actually does that depends on which credits the airlines buy. Here's the state of play.
Read →The EU Carbon Border Adjustment Mechanism
CBAM started enforcing carbon-cost imports in 2026. It is the first attempt to extend the EU carbon price beyond Europe — and it changes the game for everyone selling int
Read →The economics of 1 tonne of CO₂
The price of 1 tonne of carbon ranges from $4 (cheap forestry) to $700 (DAC). Here's why the spread is so wide, and what the right number looks like for travel.
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