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Climate Change

Explore the evidence and mechanisms of climate change, from greenhouse gases and warming trends to impacts, adaptation and mitigation.

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Essential guides to Climate Change

Begin with clear explanations of the key ideas, discoveries and questions in this subject.

What Is Climate Change and What Causes It?
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What Is Climate Change and What Causes It?

Climate change is a long-term shift in the statistical state of Earth's climate. The current global warming trend is primarily driven by human activities that increase heat-trapping greenhouse gases, especially carbon dioxide from.

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What Is the Greenhouse Effect?

The greenhouse effect is the process by which certain atmospheric gases absorb and re-emit infrared radiation, slowing the loss of heat from Earth's…

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How Do Climate Models Work?

Climate models are mathematical representations of the atmosphere, ocean, land, ice and the exchanges of energy and matter among them. They are built…

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What Is the Evidence for Climate Change?

Evidence for climate change comes from many independent measurements rather than one thermometer record. Surface stations, satellites, ocean instrume…

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More about Climate Change

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Climate change brings rain to Africa
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Climate change brings rain to Africa

Climate change is bringing rain back to the region that has been suffering from severe drought for decades in Africa. However, scientists are also not optimistic when wa…

Dams cause climate change
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Dams cause climate change

More and more scientific research shows that reservoirs, especially in the tropics, are a significant source of global greenhouse gas pollution.