The human body grows from a cell that is just barely visible to the unaided eye. Although a tiny speck on everyday scales, this cell is far larger than most and holds the potential to become another startling example of Life in human form. Another woman or man, another poet or scientist, another personality arises from such beginnings.

An interesting book about fetal development is Life Unfolding: How the Human Body Creates Itself, by University of...
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