By Etienne Legrain, researcher, Université Libre de Bruxelles (ULB) & Emilie Capron, paleoclimatologist, CNRS, Université ...

Earth likely evolved in not just a special place ... would require substantially more CO2 than is present in Earth's atmosphere to be habitable—-up to several thousand times as much, says ...

The model suggests that the atmosphere on ancient Earth was strikingly similar to what we see currently on neighboring planets Venus and Mars. However, despite their proximity, Earth evolved into ...