Thinking of biology:  asteroid impacts, microbes, and the cooling of the atmosphere.
Oberbeck
V R
VR
NASA Ames Research Center, Moffett Field, CA 94035, USA.
Mancinelli
R L
RL
D001272:Atmosphere; D005075:Biological Evolution; D002245:Carbon Dioxide; D002980:Climate; D018534:Earth, Planet; D004783:Environmental Microbiology; D019419:Evolution, Planetary; D019015:Geologic Sediments / Q000032:analysis; D019110:Meteoroids; D018543:Minor Planets; D000069497:Origin of Life; D010103:Oxygen Isotopes; D013696:Temperature
D010103:Oxygen Isotopes; D002245:Carbon Dioxide