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By giving male mosquitoes a case of intense infertility (and counting on the females to not notice anything, um, missing from the experience), scientists hope they can prevent a second generation of bugs from spreading malaria.

The single biggest factor, by far, in reducing the rate of death among children younger than five is greater education for women. In all countries worldwide, whether females increase schooling from 10 years to 11, say, or two years to three, infant mortality declines , according to a recent study by the Institute for Health Metrics and Evaluation at the University of Washington

A new study says that BPA exposure might make men less attractive to the opposite sex--if we're anything like deer mice. Which it turns out, we might be. BPA has already been linked to breast cancer, early puberty, and infertility.

By Ewen Callaway of Nature magazine Fossilized teeth of early human ancestors bear signs that females left their families when they came of age, whereas males stayed close to home. A chemical analysis of australopithecine fossils ranging between roughly 1.8 million and 2.2 million years old from two South African caves finds that teeth thought to belong to females are more likely to have incorporated minerals from a distant region during formation than those from males