International Climate Efforts Since 1990

Visual Learning

Climate efforts since 1990 have centred around the United Nations process, while in parallel, the scientific understanding of climate change has advanced, and been widely disseminated, through the IPCC’s regular reports.

While the collective climate ambition has increased at a pace that many regard as too slow to meet the challenge, the UN process necessarily involves consensus among more than 190 countries. This also means that decisions that do occur at the UN enjoy widespread support from governments and are likely to stick.

Under the umbrella of UN climate goals, countries have responded individually and in groups, to deliver supporting policy frameworks such as emissions trading systems, carbon taxes, direct emissions regulation and support for low carbon energy, transport and industrial processes.

The climate negotiating process is alive, renewable energy costs have fallen and carbon pricing continues to expand globally with new carbon markets emerging in many of the fast-growing economies while older more established carbon markets continue to expand their coverage into new sectors.

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Climate Change

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LATEST VISUAL LEARNING

This chart shows the total amount of man-made emissions created by the world's biggest polluters.
The amount of atmospheric CO2 has charted a steady climb higher. The Mauna Loa Observatory on the north flank of volcano of the same name
CO2 emissions from the industrial sectors led to a year-on-year drop in 2025 under the EU Emissions Trading System, according to verified European Commission figures
Refers to sectors in which greenhouse gas emissions are difficult to reduce. Includes industries such as iron and steel, cement, refining, chemicals, shipping, aviation and
A set of 10 principles put forward by the Integrity Council for the Voluntary Carbon Market (ICVCM) which define high-quality carbon credits, focused on aspects

22 May 2026

HIGHLIGHT
Construction slowdown a factor in lower EU ETS CO2 emissions in 2025: EC

CO2 emissions from the industrial sectors led to a year-on-year drop in 2025 under the EU Emissions Trading System, according to verified European Commission figures released in April.

19 May 2026

GLOSSARY
Hard-to-abate

Refers to sectors in which greenhouse gas emissions are difficult to reduce. Includes industries such as iron and steel, cement, refining, chemicals, shipping, aviation and heavy duty trucks.

12 May 2026

GLOSSARY
Core Carbon Principles

A set of 10 principles put forward by the Integrity Council for the Voluntary Carbon Market (ICVCM) which define high-quality carbon credits, focused on aspects such as governance, tracking, verifiability and additionality.

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