Video encyclopedia

Greenhouse gas


What Is the Greenhouse Effect?


How Do Greenhouse Gases Actually Work?


The Scary Mr. Greenhouse Gas! | Climate Change | Save the Environment | Pinkfong Songs for Kids


Understanding Climate Change - How Greenhouse Gases Warm the Earth


Types of Greenhouse Gases

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