A team of researchers from several institutions in France, the U.S. and Sweden has used models of possible conditions on Mars to show that the red planet may have sported a northern ocean 3 billion years ago and that the climate was likely wet and cold. In their paper published in Proceedings of the National Academy of Sciences, the group describes theories to explain conditions on the surface of Mars today, and a model that simulated a wet and cold planet.
Click here for original story, Simulation shows Mars could have been cold and wet three billion years ago
Source: Phys.org