There is the greenhouse effect, and then there is global warming (enhanced greenhouse effect). The greenhouse effect is caused by certain gases (and clouds) absorbing and re-emitting the infrared radiating from Earth’s surface. It currently keeps our planet 20°C to 30°C warmer than it would be otherwise. Global warming is the rise in temperatures caused by an increase in the levels of greenhouse gases due to human activity.
Main greenhouse gases: carbon dioxide, methane, nitrous oxide. The higher their amount in the atmosphere, the higher the temperature. Why?
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Learn the following annotated diagram!
A series of short videos on the impacts of global warming: 1-6 degrees could change the world
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