Text and illustrations describe the eggs of several species, including ostriches, frogs, and butterflies, and explain what the young do after hatching.
Contains articles that provide opposing viewpoints on issues related to stem cells, discussing whether stem cells will cure disease, the ethical and moral questions surrounding stem cell research, the role of the government in stem cell research, and alternatives to embryonic stem cells.
Follows the development of life in the womb from the moment of conception through the day of birth, with photographic images made available through electron microscope technology and details about each stage of the pregnancy.
Combines three- and four-dimensional ultrasound images, computer-generated graphics, and commentary to examine the prenatal development of different mammals, including dogs, dolphins, and elephants.
Contains ten articles that provide various perspectives on the issue of human embryo experimentation, exploring questions over whether the practice is beneficial and ethical, whether research should be federally funded, and whether early human embryos are human beings.