KETTERING "One fails forward toward success."

 A

AT YOUR BEGINNING, A TADPOLE-SHAPED CELL found the opaque edges of a human egg and burrowed inside. The fertilized egg—now an embryo— cinched itself and divided into two. Two cells became four, four became eight, and so on until something astounding happened: instead of remaining identical, each cell took on a different role. 

A

A

DR. CHARLES H. MAYO A