Compound Interest, a chemistry blog, compared the atmospheres of planets in the solar system. Venus is similar to Earth, but living there would be tough sledding:
The atmospheric pressure is around 92 times that found at sea level on Earth, with the main gas being carbon dioxide – the result of previous volcanic eruptions on the planet’s surface. Higher in the atmosphere, the planet also has clouds which are a mixture of sulfur dioxide and sulfuric acid. There is a thick layer of carbon dioxide below these clouds, which subjects the surface of the planet to an intense greenhouse effect. Surface temperature on Venus is around 480˚C – much too hot to sustain life as we know it.
