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Greenhouse gas

3:09

How Do Greenhouse Gases Actually Work?

2:30

What Is the Greenhouse Effect?

2:04

What is the greenhouse effect? | Global Ideas

2:11

What is GREENHOUSE GAS? What does GREENHOUSE GAS mean? GREENHOUSE GAS meaning & explanation

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What Is Greenhouse Gas?

A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range. Increasing greenhouse gas emissions cause the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide and ozone. Without greenhouse gases, the average temperature of Earth's surface would be about −18 °C (0 °F), rather than the present average of 15 °C (59 °F). The atmospheres of Venus, Mars and Titan also contain greenhouse gases.
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    • Gases in Earth's atmosphere 

    • Impacts on the overall greenhouse effect 

    • Natural and anthropogenic sources 

    • Role of water vapor 

    • Anthropogenic greenhouse gases 

    • Life-cycle greenhouse-gas emissions of energy sources 

    • Removal from the atmosphere 

    • History of scientific research