Genetics

The origin of twins

(Medical Xpress)—The egregious presumption of universal fact has a long history in science. The ever popular Giordano Bruno was burned at the stake in the year 1600 for crimes against the state; namely, declaring not only ...

Psychology & Psychiatry

Test tube children develop mentally normal

Whether a child is conceived naturally or in a Petri dish in an incubator has no bearing at all on the child's mental health. However, researchers have identified a small but increased risk of developing a mental disorder ...

Health

Why do women go through menopause?

Menstruation is a reproductive quirk that humans share with only a few other mammals. But even stranger is the fact that women stop menstruating when they have a whole third of their lives left to live.

Medical research

A molecular explanation for age-related fertility decline in women

(Medical Xpress)—Scientists supported by the National Institutes of Health have a new theory as to why a woman's fertility declines after her mid-30s. They also suggest an approach that might help slow the process, enhancing ...

Medications

The future of Plan B

The Obama administration and federal courts are wrangling over changes to the regulations governing access to emergency contraceptives. The administration supports new rules that would allow girls as young as 15 to purchase ...

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