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  Sexploration — By Brian Alexander
Sorry, guys: 80 percent of women fake it
A new study shows that women's seemingly uncontrollable vocalizations during apparent orgasm are often play-acting meant to boost his ego — and get it over with.

  Breaking Bioethics — By Arthur Caplan
Opinion: Stem cell clinics ripping off patients
No one likes a bully. Intimidation is a rotten way to get what you want. Yet that's what some in the stem cell therapy industry are trying to do to a group of scientists trying to speak up about the often fraudulent nature of their business, writes bioethicist Art Caplan.

  Second Opinion — By Robert Bazell
Dispute behind Nobel Prize for HIV research
The announcement of the 2008 Nobel Prize in medicine brings another chapter, perhaps the concluding one, to one of the ugliest controversies in modern medical science.

Free video: Health
Image: Pregnancy/Protein
for NBC News
Pregnant moms in protein conundrum
New mother Cemetria Graham loves fish but had to modify her diet when she was pregnant with her son Jayce as new guidelines warn of even higher levels of mercury in canned tuna.

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