Life, geology and snowball Earth.
Schrag
D P
DP
Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts 02138, USA. schrag@eps.harvard.edu
Hoffman
P F
PF
D002245:Carbon Dioxide; D003081:Cold Climate; D018534:Earth, Planet; D056890:Eukaryota; D005057:Eukaryotic Cells; D005615:Freezing; D009792:Oceans and Seas; D010788:Photosynthesis
D002245:Carbon Dioxide