Mars has long been seen as one of humanity’s best hopes for colonization, but its harsh environment, freezing temperatures, thin atmosphere, and lack of liquid water, has made it an impossible ...

A look at the science behind Elon Musk's goal of a million-person city on Mars, and why planetary scientists say terraforming ...

Making Mars Earthlike is not impossible in principle, but the scale of mass, heat, oxygen, and energy required makes it far beyond current capability.

Terraforming Mars remains one of humanity's boldest dreams, but a new study argues that today's technology is nowhere near capable of making it happen.