Carl Sagan
| Story Title | Content type | Authored by | Authored on |
|---|---|---|---|
| Laughing gas may have prevented Earth's oceans from freezing over | External News | mrosten3 | |
| Laughing gas warmed early Earth a billion years ago and sparked the emergence of life | External News | mrosten3 | |
| Cold Suns, Warm Exoplanets and Methane Blankets | News | Ben Brumfield |