Did Mars experience a greenhouse effect around 4 billion years ago?
![Did Mars experience a greenhouse effect around 4 billion years ago? Did Mars experience a greenhouse effect around 4 billion years ago?](/insights/sites/default/files/styles/low_resolution/public/EDid%20Mars%20experience%20a%20greenhouse%20effect%20around%204%20billion%20years%20ago.jpg?itok=jv4oBenu)
According to a new study, the presence of molecular hydrogen, carbon dioxide, and water on Mars could have created a greenhouse effect on the red planet 3.8 billion years. Read more in Nature Geoscience.
RM Ramirez et al., Nature Geoscience, 2013. DOI: 10.1038/ngeo2000