Earth science: Life battered but unbowed.
Rothschild
Lynn J
LJ
D005075:Biological Evolution; D018534:Earth, Planet; D049690:History, Ancient; D006358:Hot Temperature; D019110:Meteoroids; D008954:Models, Biological; D016081:Moon; D000069497:Origin of Life; D017640:Silicates / Q000032:analysis; D013242:Sterilization; D013997:Time Factors; D015040:Zirconium / Q000032:analysis
D017640:Silicates; C003784:zircon; D015040:Zirconium