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Examines the drugs for the suppression of immune system in pregnant women in the United States. Involvement of tumor necrosis factor alpha in producing inflammation; Effects of low hormone levels; Factors triggering the immune system to attack the developing embryos.

Reports on the decision of United States President George W. Bush to allow federal funding for limited research on stem cells. Diseases that can be treated with embryonic stem cells; Information on the legality of stem cell research in Great Britain.

Discusses the effects of stresses and strains of working on the Galileo project on scientists' lives. History of Galileo's mechanical failures before its launching in 1989; Impact of the shuttle Challenger's explosion in 1986; Revival of self-esteem among the scientists.

Great Britain wants to return bones held in museums to their rightful owners. But the task will be far from easy if the US experience is to be considered. The fate of the oldest Native American discovered, 9000-year-old Kennewick Man is to be decided by the courts following contests between scientists and tribes who live in the area. Since there is no complete list of skeletal remains held in Great Britain, any legislation passed will cause similar complications.