Long ago a runaway greenhouse effect greatly transformed the planet

Question

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Venus is the planet in our solar system that has experienced a runaway greenhouse effect. It is often referred to as Earth's "evil twin" due to its similar size and composition, but extreme atmospheric conditions make Venus a harsh and inhospitable environment with surface temperatures of over 800°F (430°C) and air pressure 90 times greater than Earth's. This is due to greenhouse gases trapping heat from the sun, causing a runaway greenhouse effect that greatly transformed the planet over time.

Long Ago a Runaway Greenhouse Effect Greatly Transformed the Planet