Contents

02 January 2004
Vol 303, Issue 5654

About The Cover

Cover image expansion

COVER A foreshaft used for quick replacement of broken spear points. This example, made from the horn of a woolly rhinoceros (Coelodonta antiquitatis), was discovered in arctic Siberia and is about 27,400 radiocarbon years old. See page 52. [Photo: E. Yu. Girya]