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CO2 levels rising faster than predicted - Greenpeace response

Stop climate change

The world's leaders meet at the end of 2009 in Copenhagen to determine the fate of the climate. They could set us on the path to a deep emissions cuts or they could lock the planet into catastrophic, irreversible climate change.

Science

Climate change is a reality. Today, our world is hotter than it has been in two thousand years. By the end of the century, if current trends continue, the global temperature will likely climb higher than at any time in the past two million years. While the end of the 20th century may not necessarily be the warmest time in Earth's history, what is unique is that the warmth is global and cannot be explained by the natural mechanisms that explain previous warm periods. There is a broad scientific consensus that humanity is in large part responsible for this change, and that choices we make today will decide the climate of the future.

Scientific consensus

There is, in fact, a broad and overwhelming scientific consensus that climate change is occurring, is caused in large part by human activities (such as burning fossil fuels), and if left un-checked will likely have disastrous consequences.

Climate research

It was realised by the mid-18th century that some gases in the Earth's atmosphere, such as carbon dioxide, trap heat and keep the Earth warm. At the start of the 20th century, a Swedish scientist named Svante Arrhenius put forward the idea that human emissions of carbon dioxide would eventually raise temperatures. He didn't see this as a particularly bad thing, and most scientists at the time were sceptical that humans could burn fossil fuels fast enough to have a noticeable impact at all.

CO2 emissions

The primary human source of carbon dioxide (CO2) in the atmosphere is from the burning of fossil fuels for energy production and transport. Changes in land use and deforestation also contribute significantly. Trees, for example, are natural 'carbon sinks' - they absorb carbon dioxide while alive and when they are destroyed, carbon dioxide is released into the atmosphere. Once in the atmosphere, most of the carbon dioxide stays there for 50 to 200 years, and some of it stays there indefinitely.

Governments

There is a fundamental irony and injustice at the heart of the climate change problem. Today’s growing body of evidence indicates very clearly that the first and worst impacts of climate change are felt by the poor in the developing world. The responsibility for the problem, however, lies primarily with the rich industrialised nations, and increasingly the rapidly industrialising nations.

Kyoto

On 16 February 2005, in the culmination of ten years of sometimes exhausting and often frustrating negotiations, the Kyoto Protocol became law. Thirty-five industrialised countries along with the European Union are now legally bound to reduce or limit their greenhouse gas emissions.

United Nations

The United Nations plays a key role in coordinating the international response to climate change. But it is no simple job getting cooperation and agreement from the 191 member states of the UN - all intent on pursuing their own self interests and policies - even when the evidence is clearly shows that failing to act would be disastrous for all.