Table of Contents
   Introductionp. ix
   Sperms and Eggsp. 1
   Cycles and Seasonsp. 35
   From Mating to Conceptionp. 55
   Long Pregnancies and Difficult Birthsp. 89
   Growing a Large Brainp. 121
   Feeding Babies: A Natural History of Breast-feedingp. 147
   Baby Care: The Broader Picturep. 179
   Monkeying with Human Reproductionp. 197
   Acknowledgmentsp. 233
   Glossaryp. 237
   Referencesp. 257
   Indexp. 289