Genetics

A look at the UK's proposal to make babies from 3 people

As British lawmakers vote Tuesday on whether to legalize the creation of babies made from the DNA of three people, here are some questions and answers about the proposed techniques and the controversy surrounding them.

HIV & AIDS

US mulls lifting ban on gay blood donations (Update)

A US ban on blood donations by gays could be eased after 31 years, depending on the decision of a Food and Drug Administration advisory committee that began two days of meetings Tuesday.

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