Mars was hot then cold then hot again. Could life have really survived there?

[Admin]

Scientists may have figured out how Mars hung onto its surface liquid water in its ancient history via alternating periods of hot and cold. But what would the impact have been on habitability?

Mars was hot then cold then hot again. Could life have really survived there? : Read more

 

[wwyarb]

Scientists may have figured out how Mars hung onto its surface liquid water in its ancient history via alternating periods of hot and cold. But what would the impact have been on habitability?

Mars was hot then cold then hot again. Could life have really survived there? : Read more

Hydrogen bond with carbon to form carbon dioxide?? I don't understand. Methane, perhaps?