According to an alternative model of how intelligent life emerges on planets like Earth, the existence of aliens—and human beings–could be the result of natural planetary processes.

Scientists challenge the idea that intelligent life is rare. They argue that evolution follows planetary changes, not random luck.

Intelligent life in the Universe could be far more widespread than previously imagined. A new study has just shaken up a well-known theory, the "hard steps" theory, by explaining that the

A new study proposes intelligent life is more likely to emerge than previously thought, driven by planetary conditions.